The epic struggle between light and dark starts here.
The many incarnations of Link have faced many awesome bosses during their various adventures in Hyrule and elsewhere.
Ganondorf / Ganon Ganondorf/Ganon in any game he's in tends to fit the bill.
While all of the other fights against Ganondorf (except Wind Waker) have him in possession of the Triforce of Power, the fight in A Link to the Past is the only time in the series in which you must face him while he has the entire power of the Triforce at his command. The battle may start as an apparent rehash of the original Ganon fight, but very quickly turns that on its head as Ganon begins unleashing more and more powers against you; destroying the floor of his lair, hurling his trident, summoning flaming apparitions in the form of giant bats to attack you. And this is after demonstrations of some of his greatest Magnificent Bastardy in the series, while executing the originalHijacked by Ganon.
Ganon in Ocarina of Time. Mano-a-mano versus Ganon? Check. Great music to accompany a final battle? Check. Ring of fire around you and Ganon? Check. Zelda actually helps you for once? Check. Top it all off with Link stabbing Ganon right in the head for the finishing blow. Add it up and you get a boss fight worthy to end a classic game.
Also, it's so dark you can't really see more than Ganon's silhouette and glowing eyes. That is, until a lighting strikes every now and then and you get to see his blue pig like figure for a fraction of a second while he is swinging his blades and making that noise. That is some epic atmosphere.
The battle becomes more epic still if you run out of magic and therefore can't use light arrows to stun him. Cue rolling under Ganon's legs to hit his tail. Talk about a memorable way to beat OoT for the first time.
Ganondorf (his human form fought before Ganon) wasn't bad either, especially due to the Awesome Music that accompanied the battle.
The Ganon battle in Wind Waker takes place in the middle of a flooding Hyrule and features a kimono-clad Ganon with two swords while Princess Zelda hijacks your bow so she can participate in the fight. And Link finishes the battle by jumping up in the air and ramming the Master Sword into Ganondorf's forehead! And then Ganondorf turns to stone, but not before he utters some of the most epic last words ever:
Ganondorf: The wind... it is... blowing...
Ganon in The Legend of Zelda: Four Swords Adventures. He's huge, and while he's not hard to damage at first, he soon ups his attack patterns by throwing his massive trident at you and teleporting you close to him, and in the final stage he has a fiery aura that makes him impossible to beat except by deflecting his shots back at him.
At the end of Twilight Princess, you get to fight Ganon in a one-on-one sword duel. Indeed, the entirety of the final battle in Twilight Princess is one big CMoA — the first fight against (Ganon in Zelda's body) isn't all that great (he uses the same easily beatable strategy he did back in A Link to the Past and Ocarina of Time), but from there, Ganon takes on his Giant Hell-Pig form, and Link and Midna shoot each other a confident, "Let's-do-this" smirk before engaging in a massive, shapeshifting teamwork free-for-all in which you wrangle a giant charging hell-boar and hurl him onto his side, then wail on the scar on his belly. Then comes a horse chase in which Link and Zelda (armed with the Bow of Light) team up and you fend off the ghostly hordes Ganondorf hurls back at you, giving Zelda a clear shot at him. Then comes the final Sword Fight of awesome. You feel like a Big Damn Hero after this, and it's well-earned.
The multi-headed dragon Gleeok is one of the hardest bosses because each head you sever catches fire and flies about the room, attacking you; this is also the reason he's the coolest boss, bar none. And the second one you face has FOUR of them. We can only wish Nintendo will eventually bring him back in one of the 3D console installments (he did return in two 2D installments, namely Oracle of Seasons and Phantom Hourglass).
Rebonack, who chases you on a mechanical horse back and forth across the screen. How do you beat him? You jump over him and stab downwards as he passes. Eventually, he wises up and gets off his horse, then faces you like the rest of the game's Iron Knuckles, which are all awesome battles in their own, except he shoots sword beams and is much better at defending against your attacks. You have to not only closely watch his actions so you know where to defend, no matter where you are on the screen, but also play it smart and bait him to stay in the middle of the screen so he doesn't try shooting lasers at you from Behind the Black.
Ocarina of Time boss Volvagia first appeared in Zelda II under the name Barbanote short for the Japanese name "Barubajia." Due to the Japanese language's L/R thing's lesser-known sibling, the B/V thing, Barubajia and Varuvajia are actually the same name, so the fact that Barba really is Volvagia is kinda Lost in Translation., and uses a similar attack, poking his head out of lava and extending his long neck. The weak point is his head, and the solution is casting the jump spell so you jump to unusual heights and stab him in the face.
After killing the Thunderbird and finding the Triforce, you were likely expecting to simply sit back and enjoy your ending, weren't you? Nope! Instead, the lights go out and Shadow Link makes his first appearance, splitting off from you and going on the attack, complete with his own battle theme to let you know that shit's about to get real. He naturally knows all of your moves. Oh, and you don't get to restore your health or magic points after Thunderbird, but that only increases the satisfaction when - or rather, if - you win.
Although he also qualifies as That One Boss, Trinexx, the boss of Turtle Rock, is nevertheless an awesome boss whose defeat gives immense satisfaction. He initially appears as a three-headed turtle; the left and right heads spit fire and ice respectively, and must be paralysed with ice and fire before they can be attacked, while the middle head is invulnerable. Once they go down, the middle head retreats into the shell and transforms into a giant snake-like creature which chases Link around the room. As a bonus, when Trinexx is defeated, you are finally re-united with Princess Zelda (in crystal form).
The first boss proper: six giant Armos statues start attacking you in formation. This game introduced the concept of using the dungeon's item on the boss. What better way to let players know than letting them ruin the Armos' almost dance like attacks by unloading your entire quiver on them? And if you run out, you can still use the sword. And then when you kill five of them, the last one Turns Red and starts jumping over to smash you into the ground.
Blind the Thief from the fourth dungeon of the Dark World. In preparation for the fight, though you have no idea what you're doing, you blow up a floor where light from a window shines in. The boss room is curiously empty. However, you find the maiden you're looking for elsewhere in the dungeon, so you can get out right? Except that all the maidens were trapped in crystals, so it seems very suspicious finding one in a simple jail cell. And she won't let you leave because it's too bright outside. So you take her to the boss room, right under the light from the window, and watch her go crazy and turn into Blind The Thief. A demon with a head spinning constantly and shooting lasers all over the place. The head is the target, and when you hurt him enough, his head comes off and he sprouts another one. Eventually you have heads flying all over the place and you're perilously dodging lasers trying to attack his head.
Agahnim. The first example of a Tennis Boss in the series. He teleports all over the place and shoots energy balls at you, but unlike future tennis bosses, only the big ones can be returned. The smaller ones spread out to hurt you upon being attacked and sometimes he throws out Sith-like Lightning that's deadly, but can be dodged if you stand in the right spot. For extra awesome, try reflecting his attacks with the bug catching net.
The Stalfos enemy makes for some pretty epic sword duels. If there's several in a room, and you Z-target one, the other ones will leave you two alone as you fight to the death.
They one-upped that one with the Dinofols, a lizard clutching a similar sword and shield in Majora's Mask. There's two differences: Dinofols is much faster than any Stalfos— faster than you, as a matter of fact— oh, and it can breathe fire. Exhilarating!
The music for both this battle and King Dodongo are truly epic; setting the perfect mood for being trapped in a room with something very big and scary that wants you very dead.
A mid-boss example from Ocarina of Time and Majora's Mask, the Iron Knuckle is easily one of the most powerful enemies in the game, and capable of huge amounts of damage. Their attacks are unblockable as well, and their speed increases when they begin to take heavy damage, which makes it a fun but deadly game of chicken.
Though they're pretty easy if you use Bombchus.
OR when you use the shield without Z-targeting and stab his knees full of holes.
In OoT, casting the Nayru's Love spell is also fun. It costs a buttload of MP and doesn't prevent the monsters from knocking you down, but it makes you completely immune to damage until the spell wears off. (Unfortunately it also interferes with the use of magic arrows...)
In Majora's Mask, the Bunny Hood allows you to run rings around those guys, which makes it a rather fun game of 'stab the big guy in the back'.
Two words: Dark. Link.
Best miniboss EVER. And from the same Temple - Morpha is awesome fun.
Two stabs with Biggoron's Sword always works, too. A 10-second miniboss fight? Hell yeah.
This was the first appearance of Phantom Ganon. Not as awesome as in Wind Waker, but still cool. The battle begins with him riding on his horse and he flies through a painting. Then you stand in the center of the room, take out your bow then look for him to come out of one, at which point you let loose your arrow and shoot him down. Eventually he starts adding fake Phantom Ganons! You're watching him ride down the hill in the painting... but if you're looking at the wrong one, he turns and rides back up the hill! Meanwhile, the actual Phantom Ganon has come out of a different painting in order to sucker-punch you.
Bongo Bongo. Fighting a giant, shadowy Eldritch Abomination on top of a big drum has never been so much fun.
Odolwa, the boss of the Woodfall temple, is pretty fun once you know how it works. You're basically just shooting arrows at a giant in a jungle mask, surrounded by flames, running away from bugs.
Also, you can forget the arrows and fight him in a straight-up sword duel. Best done with one of the weaker early swords though; the best one finishes him pretty quick.
You can also try to defeat him as Deku. It's pretty fun.
Goht is the source of much entertainment. Throughout most of the dungeon, you're climbing up a tower. When you get up to the very top, you enter Goht's chamber. Initially nothing seems odd about it, so you go ahead and fire a fire arrow at the thing trapped in a block of ice. A huge mechanical bull bursts out, smashes the walls, and tramples Link before running off. Well then, it's on now, so Link puts on the Goron Mask and starts to roll after Goht. As you roll down the raceway, you realise that this track wraps around the entire central chamber. You're using the Goron roll at full power, and there are jars that contain magic powerups so you can keep going without stopping. As you wear the boss down, he'll start throwing rocks, stalactites, and even bombs at you, and after you keep hitting him, he doesn't just collapse, he keeps going until he runs into a wall causing rocks to fall on him. And since he appears in Majora's Mask, you can just keep resetting time, fighting him over and over. And that's why Goht is one of the greatest Zelda bosses ever.
Gyorg can come off as a bit bland, if you stay on the platform and try to shoot him as he jumps out of the water, but if you put on the Zora mask you instead play a fast game of chicken where you have to ram him in the side without letting him bite you. After defeating him, you feel like a badass ocean predator.
Twinmold, THE biggest boss in ANY Zelda game, and next to impossible to complete without the Giant's Mask. Even Fierce Deity Link is hard to use against these two. Next to the huge descending moon, this boss alone put the Expansion Pack to its limitations and then some.
Also, the Fierce Deity Mask is a Game Breaker; only usable in boss rooms and makes bosses so easy it's not too much fun. However, it is hard to use against Twinmold, making it actually fun to put your new strength, powers, and cool scary design to maximum use.
The final battle with Majora itself is a long, involved test of everything you've learned up to that point, with alternating weaknesses, sequences where you have to chase it down and the amazing feeling of stabbing the cause of everything bad in the mask. Or you can just cheese it with the Fierce Deity Mask and enjoy the catharsis of mowing it down in seconds flat, knowing your time spent gathering the masks was well worth it.
The first boss in Seasons, Aquamentus (the dragon from the first game), is a pretty effective revamp. He's still easy, but rather than looking like a dorky, winged unicorn, he has the menacing physique of a full-on dragon this time. He also actually puts his wings to use in this battle by charging at you with his horn.
The second boss in Seasons, King Dodongo, is a faithful recreation of his battle from Ocarina of Time. However, this time you get to pick him up and throw him into a pit of spikes. The sheer ease of the battle actually adds to the awesomeness, as it makes the player feel truly powerful.
The third boss of Seasons, Mothula from A Link to the Past, is a frantic and fast-paced boss. Arguably the game's first truly challenging boss, it moves at a breakneck pace in tricky patterns. It also tries to knock you into a hole which leads you down into a dungeon, where you bounce back up and start the fight all over again, a la Moldorm.
The fifth boss of Seasons, Digdogger, returns from the first game. The first thing you'll notice in this fight is that the sword doesn't scathe him. Then you notice a spiked ball perched atop one of the room's pillars. Naturally, that's your main weapon in this fight. In what is arguably the series's most faithful example of "using the dungeon's weapon to beat the boss", you use the magnet gloves to attract and repel the spiked ball, ramming it into the boss. Then Digdogger splits apart into a bunch of tiny Digdoggers, which you use the spiked ball to run over.
Anyone who has ever beaten Oracle of Seasons will shudder at the name Dark Dragon. For those of you that haven't, he takes, for a GBC game, a ridiculous time to beat, deals moves that are almost unavoidable, and only appears after you beat his difficult, but comparatively easy first form. Suffice to say, one feels like a god after beating him. Of course, if you're on a linked game, you still get to fight Twinrova and Ganon. Luckily, you're able to heal beforehand.
Jalhalla as well. He's a giant Poe, and like all other Poes, you must use the Mirror Shield to shine light at him, causing him to become material. Unlike the other Poes though, he falls to the floor, too heavy to move, and then you have to pick him up and throw him at the spiky walls, at which point he bursts into a bunch of little Poes that run around all over the room, vulnerable to your sword. If you've gotten the Hurricane Spin before this, then once you throw him, you charge it up and become a whirling tornado of destruction, possibly killing the boss after throwing him only once by destroying all the poes that make him up.
The death of the Helmaroc King has to qualify. The boss (a giant bird) shrieks, begins to fly up into the air, the searchlights catch him in their beams, he reaches the apex of his rise, gives one last scream and pow, all while the victory music plays throughout.
More awesome because that bird is the thing that kidnapped Aryll, and you waited to kick its feathered behind for half the game. Sweet, sweet taste of revenge.
Phantom Ganon (Wind Waker edition). You've got several things going on here: first, some impressive cell shading effects on the subboss himself. Second, it's a Tennis Boss. Then toss in some awesome showdown/fight music. Next, manipulate said music so that it adds, subtracts, or even changes based on what is happening. Phantom Ganon on the ground gives you the simplest version of the music, in the air adds a beat or two, volleying the energy ball changes to a track that tenses up each time you land a succesful swing, and then a dramatic sting when you finally bring him back down. It's quite a rush, and to top it off, he leaves the fight with a sinister laugh, knowing full well that the two of you will be meeting again.
Made even better when you realize that you can use an empty bottle to knock back his energy balls so that it looks like Link is punching them. Bad. Ass.
As tense as the fight is, it only adds to the awesomeness of your first use of the Light Arrows. You get the arrows, and you are then confronted by another Phantom Ganon. Ready to test the strength of your new Light Arrows, you take aim, let one fly, and let your jaw drop as the first arrow obliterates him.
That music? A remix of A Link to the Past's final boss theme. Yes, a miniboss gets a final boss theme. That alone is sheer awesomness.
The Gohdan fight. Maybe it's the combination of weapons you need to use, but also the music is awesome. Also, because it's right after Tower of the Gods.
Puppet Ganon. First, you beat his normal, vaguely-human-shaped form, and Link begins to jump for joy at having beaten him - but then, the supposedly defeated puppet shudders and turns into a gigantic spider. And after defeating that form, it once again leaps into the air and transforms once again, but this time into a huge snake. The music for the Snake Form is awesome, but best of all is the boss itself, because you've basically got to shoot it in the butt with Light Arrows. Perhaps the best part, though, is the ending cutscene, where Link is practically on his hands and knees, panting and exhausted, then Ganon appears again and reminds him that he's still got one more battle before the adventures over. You can practically FEEL Link go, "Goddammit, why me?" at that point.
Gohma. You enter the boss room to find out what has been messing with Valoo. At first, you just see Valoo's tail dangling through a hole in the ceiling over a pool of lava. Then, a massive scorpion rises from the lava, and you have to get rid of its armor by bringing the roof down on it. As the first boss in the game, it's pretty awesome.
Palace of Winds. A High Altitude Battle with the Gyorg Pair, twin flying Manta-like creatures. (Completely different from the Gyorg in Majora's Mask.) What makes it especially awesome is that you fight it on the backs of said Gyorgs, hopping from one to the other while miles in the air.
The Final Boss, Vaati (all three stages) was also excellently done.
The giant Octorok in the ice temple.
Mazaal, basically a 2D version of Gohdan from Wind Waker. Pure awesome.
Stallord is similar to fight with Goht mentioned above, instead combining rail shooter elements, without the shooting of course. The battle still involves ramming however, but plenty of other Stalfos get in the way, making this one a little more precision oriented. (Or a game of pinball.)
It gets better once you destroy his first form, the sand goes away and you have to surf a spinning top alongside rails on the inner/outer walls. Stallord's floating goat head shoots at you? You jump to the other side, until he decides to blast fire at you. What do you do? Ram straight into him, both of you go down to the floor and you slash the heck out of the sword stuck in him.
And the entire time you're fighting his second phase, the music playing is a remix of the boss themes of King Dodongo and Volvagia from Ocarina of Time.
The battle with Argorok. Picture a battle with a fire-breathing dragon which takes place on top of a large tower which is situated on top of a floating island thousands of feet in the air, in the middle of a rainstorm while epic music plays, and after taking some damage, the boss decides to stay airborne and out of your reach... so you go after him, dual-wielding your twin Clawshots so that you're flying around the arena like freakin' Spider-Man. Can you say "bitchin'"?
Made all the more awesome when you use ending blow. After grappling onto his back and frantically slashing at his weak spot, you then stand up and plunge your sword to the HILT into his spine.
Also, of the four Twilight Mirror Shard bosses, Argorok is the only one you can Finish, and is the last one you Finish before Ganon. That just shows how much of a Moment Of Awesome its whole boss battle is.
The fight against Zant. His fight is divided into about 6 or 7 phases where he changes the background into that of an older dungeon, forcing you to use the item from that dungeon in some truly unique fashion in order to hurt him, ending in a sword duel in front of Hyrule Castle Town. Best use of the Final Exam Bossever.
What makes it truly epic is that with each phase, a new element is added to the background music. The music becomes more frenzied and chaotic, accentuating Zant's descent into madness, especially as by the end he has reduced to flailing wildly with his blades and shrieking like a psycho.
The fight is also a bit of Fridge Brilliance concerning Zant as a character. The guy usurped the throne from Midna, and then he goes and usurps the battle arenas from all the other bosses, proving he has no real power of his own and can't do a thing by himself.
The Darknuts. One of the few enemies in the game tough and strong enough to draw out the full extent of the techniques you've learned, you're able to engage them in an extremely epic one-on-one duel in the main quest as you slowly wear down their armor before, like the Iron Knuckle, they become fairly agile without losing a lick of strength or defensive ability, fighting like watered-down versions of Ganondorf's final form. Add in the fact that having to beat three to four of them at once to clear the Bonus Level Of Hell is much, much harder than any of the temple bosses if you don't just chuck bombs and run away, and they easily qualify for the most Badass of Ganondorf's forces.
Also made awesome by the fact that when you knock off the last bit of armor, the Darknut will leap backwards to avoid you, fling his weapon at you with enough force to make Link stagger even when blocking, and then swiftly pulling out a smaller longsword to fight you with. And now he will do combos.
And makes a weird, approving rumble when you do so, making it sound like he considers you a Worthy Opponent.
Of course, the thing isn't actually a floating sword; it has a wielder in the form of a seriously awesome, if creepy as hell, demon. But for the maximum effect, use your wolf senses before unsealing the demon, and you can see it there, holding the sword, just waiting for some fool to release it.
Twilit Bloat (the giant light bug from nowhere) can be incredibly fun for some players. There's something so satisfying about being confronted with a revolting, jiggling mass and pummeling the shit out of it.
King Bulblin. The first time you fight him is on Eldin Bridge. A jousting match where you must pass by him and slash him with the sword as you do so, and then make a U-turn and do it again, while trying not to fall off. Eventually, you beat him, and then Link strikes a pose as Epona reels back. The second time around he trades his armor for two shields. You can't slash him, and you can't shoot arrows at him... or so it seems. It becomes the same principle: barely pass by him, aim your arrow, then release when he's too close to react.
Morpheel. First you grab its eye with the clawshot, anchored at the bottom with the iron boots to slash at it. But then its eye goes to its back, and then you swim above it and try to latch onto it then. When you do, Link pulls himself to Morpheel's back and just keeps slashing it. Badass.
Eox. A giant soldier made of stone. To beat it, you stand on a lever, launch yourself into the air with your hammer, and then pound on it until its wooden frame collapses—after which you have to launch yourself onto its still-moving head and take it out once and for all.
The Bellum battles provide a suitably large-scale finale to the game.
The first battle against Bellum takes place over three floors of a building.
The Bellum boss battles become even more awesome when you must use the Phantom Hourglass to stop time in order to hit him. Even better is the final battle, when you have to use your Fairy Companion's first person view on the lower screen to spot when his weak spot is hittable!
Cragma is a giant stone golem residing in a pit of lava, who foolishly grants you access to a mine cart that you ride up and around the chamber, filling his glowing weak points with arrows.
Byrne, The Dragon, against whom Phantom!Zelda assists, and she's capable of yanking him right off the pillars he's balancing on. In the fight's second phase, she can grab and wrestle with him when he does a darkness-powered dash attack, allowing Link to strike.
Skeldritch, a skeletal totem pole of sorts, in which you can catapult the boulders it throws right back at it.
The Demon Train. Train vs. train fight, anyone? And unlike the Ghost Ship battle in Phantom Hourglass, it's not ridiculously cheap, and there are simple and intuitive counters to each of its attacks. Plus, its final weak point is its enormous face, and it's oddly satisfying to pound it full of cannonballs and see it writhe in agony.
And finally, one of the best final boss battles in Zelda history (which is saying A LOT!): Malladus itself. Especially the final phase, where he turns into an enormous demonic blue warpig-like creature, with horns and red hair. Sound familiar? And that's not even getting into how Link and Zelda — back in her body — team up to fight the very Ganon-like creature, and you have control over both of them. It bears repeating: Link and Zelda team up, both under the player's full control, to fight a Ganon-like final boss. Gee, Nintendo, is it even possible to deliver any more fanservice?
And then the music complementing that fight. A remix of the overworld/title theme, with all of the Lokomo's instruments playing a part in the song, that's a perfect continuation of the duet you played with Zelda moments before.
And the icing of the cake is the absolutely glorious CMOA that ends the battle: Link and Zelda wielding together the Lokomo's Sword (Yes, IT IS possible to deliver more fanservice) and thrusting it into Malladus forehead in a Smashing Survival event! And you thought topping Link stabbing Ganondorf's head with the Master Sword at the end of Wind Waker was impossible!
The moment when you realize you can just wield one of those swords is amazing. You target one and get Fi's analysis, and she says that despite their size, Link should be able to wield them. The first thought through your mind is "can I really do this?" And then, when you dismember three arms with one swing, your next thought is "Holy crap! This is really happening!"
Tentalus is no slouch, either. A giant, one-eyed, tentacle-haired kraken monster, you fight it at the end of a Time-Shifted Ancient Robot Pirate Ship. Before you do that, however, you have to escape from the ship as Tentalus tears it a new one. You sprint from the lowest level to the deck as the ship shifts from side to side, dodging falling debris and charging your sword to chop through massive tentacles, all while the water rises behind you. By the time you reach the deck, Tentalus has torn the ship in half. You fight it on the wreckage in the middle of a violent thunderstorm. The Holy Shit Quotient just went waaaaayyyy up.
Moldarach is also pretty impressive. Between slashing the eyeballs in her claws, breaking free from her attacks, exposing her as she digs under the sand, and dealing with her offspring, you can basically think of her as "Gohma+." A very well-done throwback boss. Also, the same amazing music plays in her battle as does in Koloktos.
Scaldera probably one of the most amusing bosses in the series. You're on a long, thin boss stage that continuously goes uphill while Ghirahim throws a tantrum and brings the boulder that almost killed you Indiana Jones-style to fiery, scalding life. You have to chuck bombs into its giant mouth and blast away its exoskeleton until a pulsating, round blob of flesh with a single eye is revealed and you gotta hack that thing apart. All while an extremely addicting track plays. It's the first holy-crap-what-the-fudge-is-that-thing boss. When that boulder first explodes and sprouts thin, scrambling legs, you know shit just got real.
Speaking of Ghirahim, all three of his own boss fights qualify, as well. The first one, especially, because he subverts the series-long tradition of having the boss' weakness be whatever item you picked up in the dungeon earlier. Here, the only weapon that will work against him is your sword... that is, if Ghirahim isn't too busy using it to slash you to bits because you telegraphed your moves and let him grab your sword out of your hand. Call him a Sissy Villain if you want, but Ghirahim earns the title of Demon Lord with a vengeance.
Ghirahim's final form is an epic duel for the ages. After taking his true form as a sword spirit, Ghirahim lifts both you and him into the air on a floating platform. The fight then becomes a sequence of throwing Ghirahim off of a number of platforms, then plunging down on him from above with the Master Sword. When you finally reach the ground, Ghirahim takes off the kid gloves and starts trying to lop your head off with a number of different swords, including a zweihander that you must literally slash to pieces in order to expose Ghirahim's weak point. And the part that makes this fight truly awesome? Thanks to the revolutionary motion controls, the one who does all of this is you- you're not just playing Link. You are Link.
The game's final boss Demise is one hell of a throwdown too. You fight him in what looks like a floor made of water in the sky. You sword duel him in a fairly normal matter until you knock him to the ground the first time. Then he gets to his feet, summons and lightning storm, and engulfs his sword in lightning. You then have to charge your own sword with lightning and stun him with electrified Skyward Strikes while avoiding his own Skyward Strikes and vicious charge attacks. Truly, one of Zelda's most epic final battles.
Hell, even the standard Stalfos are always fun to fight. After years of becoming goofier and easier throughout the series, culminating in their slapstick-y antics in Wind Waker, they suddenly Take a Level in Badass here and put your actual sword skills to the test.
Then there's Scervo, and his successor, Dreadfuse, who are robot skeleton pirate minibosses. Both battles take place on a plank, where you have to push them back to the edge while keeping them from cornering you against a spike wall. They're certainly tense duels, especially once they power up their swords with electricity, making mistakes more punishable.
The Imprisoned can be fairlyeasy in all of his incarnations, but the second and third battles are awesome for the sheer fact that Groose, of all people, helps you win them by catapulting giant bombs (and eventually you) at it.
Being based on A Link to the Past, this game takes most of the bosses from that game and puts new takes on most of them to keep veterans on their toes (of those that made it into this game, only Moldorm remains mostly unchanged).
Stalblind, the boss of Thieves' Hideout. He's a skeletal Expy of Blind the Thief, except he's armed with a sword and shield. The shield is reflective, so at first you can merge with it to spring an attack on Stalblind. After a while, Stalbind will catch on to your strategy and ditch the shield, and it becomes a full-on sword fight, with Stalblind even having his own version of the spin attack. Once he's near death, he will use the same trick Blind before him used: detaching his own head, which will fly around the arena spraying black mist while his body continues trying to chop you to pieces.
Gemesaur King from the Dark Palace, and Expy of the original game's Helmasaur King. If you're a veteran of that game, do you think you're going to use your hammer to break his mask like you did before? Wrong. You gotta blow him up this time and can collect rupees from his body while doing so. Once his mask breaks off, he will take advantage of the dungeon's new darkness mechanic and dim out the torches, making him dangerously faster for his size.
In addition to the recycled or Expy bosses, this game has some original bosses as well. One such boss is Zaganaga of the Desert Palace. Of first note is getting to the boss himself. Unlike most of the Sage dungeons, Desert Palace is in Hyrule like in the original game (but not a Pendant dungeon, as that role is replaced by the House of Gales). Upon going through the dungeon's boss door, you go outside and take another portal to Lorule. Once you get back into Lorule, you find yourself battling Zaganaga himself in a manner similar to Volvagia over a giant out-of-place quicksand pit sitting in the middle of Misery Mire.