The first three Go-Busters in their battle against Gokaiger-beater Basco in Gokaiger vs. Gavan as well as fighting "Destroyer of Worlds" (and other Kamen Riders) Kamen Rider Decade in Super Hero Taisen. Though neither got their asses handed to them, that the incomplete Go-Busters could fight evenly matched against these two formidable foes and counter the tricks up their sleeve is pretty damn impressive.
#3: Seeing GT-02 in action doing things like swinging underneath a bridge and actually holding off the NeedleZord for most of the day until Hiromu shows up with Ace.
Hiromu crippling NeedleZord by using the CB-01 car mode's spoiler as a sword to take out NeedleZord's legs.
Enter gets one at the start of the episode by revealing a plan he thought up to Messiah. His plan is to conserve Enertron until there is enough for 5 or 6 Megazords and then unleash them all on the Go-Busters. Messiah however has other plans....
Hiromu saving a civilian from being captured by the Buglers by making him flip over his back while shooting them with his Ichigan Buster.
#4: Two words: Ace vs. CutterZord!
#5: Overheated Ryūji curb stomping the Tireroid, even going as far as to make it plead for mercy and finish it by impaling it!
The debut of RH-03's Animal Mode: Thought a rabbit robot couldn't kick Megazord ass (literally)? Think again.
#6: Go-Buster-Oh's debut. It's taller than the Megazords, even!
Enter has a rare moment of actually fighting... and manages to hold Hiromu off with one hand while he continues to look through the base's systems before activating the self-destruct sequence for the hangar.
#8: Ryūji defeats the Drillroid by himself. The fight involved the use of Dual Wielding and one of the most creative ways to incapacitate the enemy before the finisher. Awesome.
#9: The Go-Busters beating the Bugzords with just their individual mecha.
Yōko's plan to fool Enter. To elaborate, she would have Ryūji be accompanied by Morishita and Nakamura disguised as Hiromu and Yōko respectively while Hiromu would watch behind a corner to catch Enter's attention. While this is all going on Yōko would climb up the back of the building, pull Usada up and free him. It almost works.
#10: Hiromu vs. DanganRoid. It's a classic Man Versus Machine, as both have Super Speed, but the Metaroid doesn't tire. Hiromu throws away his gun and charges in to fight...then, as he leaps back, he combines his knife and the still-flying gun into their special mode and fires off his Finishing Move, all in one smooth motion.
Overheated Ryūji returns at the start of the episode and eliminates all the Mooks without hardly trying.
Go-Buster-Oh gets a big one as his fight with the DanganZord is not an entire Stock Footage battle!
#11 The Go-Busters' plan to defeat the flying FanZord. To elaborate it involves Ace running full speed at GT-02, who is in Gorilla mode on his back, jumping on GT-02's feet and using them as a springboard and using Ace's boosters deliver the killing blow mid-air.
Gorisaki using his body to protect Ryūji from fanroid's attack.
The debut of Go-Buster Beet, who proceeds to mop the floor with the new Megazord.
#19: The debut of Buster Hercules!
Go-Buster-Oh gets 2 big ones as none of the previous stock footage is used in this battle and it takes out a Delta Megazord with a Rider Kick!
#20: Filmroid creating up three buster replicas to give us a Mirror Match at the start of the show.
The debut of Great Go-Buster who breaks into the FilmZord's created Hyperspace sphere and destroys it with no effort.
#21: Ryūji curbstomping Dumbbellroid.
This requires a little elaboration. At the start of the episode Jin tells Gorisaki that Ryūji could die the next time he overheats after seeing his failed medical examination*
(In actuality, Jin was joking but Gorisaki freaked out and ran off before Jin could tell him)
and Ryūji overhears Kuroki and Nakamura discussing it after Ryūji is "kicked off" the team. He takes his stuff back and heads out to what he believes to be his final battle. Ryūji proceeds to beat down Dumbbellroid while the others just watched.
After taking down Dumbbellroid, Ryūji hops in GT-02, knocks Buster Hercules out the way, and beats down DumbbellZord without hardly trying.
#22: The debut of Escape and boy what a debut it is
To start off she attacks Enter for no reason but to introduce herself.
Then she creates Keyroid. To carry out her plan; lock up a skyscraper full of people for the Megazord to kill.
And to top it all off she goes toe to toe with Hiromu and proves to be more than a match for him.
#23: Remember how Enter and Escape were on opposing sides last episode, well now, they've joined forces!
Yōko going full out against Escape and Jishakuroid and managing to take out Jishakuroid's magnet powers.
Jin's plan to retrieve the Enertron that JishakuZord stole; turn the Enertron tower into a powerful electromagnet and suck it back out!
#24: Ace, jumping on top of SJ-05, using his boosters to help get through WataameZord's*
shockwave attack, and delivering the killing blow.
Ryūji and Yōko finishing the Metaroid was awesome. Their team attack (Yōko firing a blast and Ryūji using that blast to enhance his melee weapon) was very original and great to watch.
#25: Ryūji fighting Escape by himself was going nice. But then, he overheats himself and the battle becomes awesome.
#26: The first appearance of Ace Stag Custom. What does it do? It destroys a type Delta Megazord.
In fact the entire episode is mainly one big mecha fight.
Manually Combining Go-Buster-Oh
The Commander busting out some never before seen fighting moves against Keshigomuroid*
Nakamura telling Hiromu to Shut Up. Even better is that Hiromu is actually now TERRIFIED of her.
. What makes this fight so awesome is that Great Go-Buster's attacks are not all Stock Footage and a new piece of tech is introduced that allows Great Go-Buster to disable the artificial Hyperspace for a limited and the Demolition Thrust almost makes it look like that Great Go-Buster is jousting.
#28: Hiromu tricking the metaroid by wearing sunglasses and closing his eyes when seeing the chicken picture.
#29: This whole episode is made of it:
Enter and Escape, decked out in combat gear, taking on the Go-Busters.
Enter vs. Hiromu
Nick saves Hiromu from being killed by Enter by using his guns for the first time in the entire show!
The engineers and command staff all take up Ichigan Busters to keep Escape and Enter from stopping Great Go-Buster from entering into Hyperspace
Kuroki shows his hidden fighting moves again when Enter tries to destroy the computer.
Great Go-Buster using the Demolition Thrust to mow down an entire army of Alpha, Beta, Gamma and Delta Megazords.
And last, but not least, the appearance of Messiah's material form and he makes his presence known by summoning back Forkroid, Cutterroid, Keyroid, and Parabolaroid to take on the Busters.
#30: The Busters making their final stand against Messiah as the Original theme music plays in the background.
CB-01 Ace Vs Espilon Megazord.
From #31: Gavan Type-G showing up and beating down Buglers untransformed.
It continues with Gavan and Red Buster beating down the Metaroid of the week, first on both Bike-Nick and Sybarian, and then with a combination Gavan Dynamic/Sogan Blade slash.
#32: Morishita, out of all people, has a his shining moment when he finds a way to communicate from Makuu Space and get the Buster Gear transported there.
Gavan and the 3 main Busters performing a Special Buster Gavan Dynamic combo on Rhino Doubler.
Great Go-Buster shows off some moves by turning a Rhino Doubler flip into a chance to take some shots at him.
How does Hiromu get a Heroic Second Wind? By having Gavan scream at him from ON TOP OF DOL!
Plus points as well for having Kagayaku Ouja Dolgiran play from the point Gavan summons Dol until RhinoDoubler's shut down!
#33: All over the place.
Enter explaining that not only did he manage to perform a partial backup of Messiah, but now he's planning on using humans to help him evolve. And just to rub it in, he's treating the whole thing as a game...with the world as the prize.
The Powered Custom Armor, melding the Busters with their Buddyroids. Each gets several new abilties as well as boosts to their unique powers.
Hiromu moves so quickly, he can no longer be followed, even by the camera. He also gains the Volcanic Attack finisher, which turns him into a fiery cheetah, which runs through the foe.
Ryūji can remove a material from an object or surface and use it as a weapon. He demonstrates using a girder from a building and removing a larger stone from the ground. His strength also appears to be doubled, thanks to Gorisaki.
How does Hiromu save Nick? By punching through Sunadokeiroid *
and pulling him and everyone else out!
#34: Two Megazords plus a Puppeted GT-02 outnumber a lone J when suddenly, a navy blue lion Buster Machine appears and stops the Megazords, turning the battle in the favor of the Go-Busters.
The preview for the episode after that reveals that said lion was created by Ichiro Mizuki!
#35: The whole episode. Li-Oh is revealed to be a Buddyzord and is also a triple-changer, going from animal mode, to robot form, and eventually a bike which CB-01 can ride on.
CB-01 and Li-Oh battling it out and eventually taking it to robot form.
Li-Oh is eventually tamed and Hiromu manages to pilot it, taking down Enter and his Epsilon Zord.
Going back to how awesome Li-Oh is - Professor Hazuki uploaded his own consciousness onto its OS - which basically means that Ichiro Frickin' Mizuki is now a Sentai mech.
Yōko and J forcing Enter back, thanks in part to Yōko's new Rabbit Kick attack.
#36: The Lio Attache itself. Outside of being able to control Tategami Li-Oh, it can sense Metaroids, can sense when Enetron is being discharged, can sense when any of the Go-Busters are in danger with their weak-points, and best of all, it's a BFG.
After hearing that both Yōko and Ryūji are about to hit their weakpoints, Usada and Gorisaki grow concerned for their human companions and rush out to help them, forgetting all about their strike. Nick then decides to make the call for battle, just like his Hiromu.
Ryūji also gets a new attack, the Gorillarge Punch, which joins his arm with Gorisaki's for a massive strike. It's so powerful that Escape is sent FLYING, Gog and Magog are destroyed, and Escape's damaged to the point that Enter has to load a Metavirus into Escape just to keep her from disintegrating!
#37: Escape's Monster form vs. the Busters
Ace having a Bike Battle with TiaraZord
#38: Hiromu reaches his Wrestler in All of Us as he pilots Ace into a Megazord death match against the 4 DomeZords
Go-Buster King and Ace vs. Domeroid. That's right the Metaroid is as big as a Megazord!
#39: You have the Child of the Week take out an army of Black Belts. Granted he was tapping into the power of a Messiah Card, but still.
Overheated Powered Custom Blue Buster vs. Karateroid. It involves a very large rock being thrown.
To clarify Enter just glides in front of Hiromu who is performing the Volcanick attack and bats him aside. Then proceeds to fly right into the middle of the busters and beats them all without trying. The he goes and pulls the Messiah Card right out of Parabolaroid 2!
#41: Hiromu and Pink Buster fighting off an army of mooks.
Li-Oh gets a big damn hero moment when he arrives and attacks LoupeZord, who has stolen Buster Hercules' weapons.
Go-Busters Powered Custom vs. Louperoid.
#42: Red Buster Powered Custom vs. Enter Unite.
Blue Buster Powered Custom vs. Escape Evolve.
The Zeta Megazord Debut
#44: Oh God this episode:
The buster machines vs. an army of Megazords.
Which sees the return of Ace Stag-Custom
Also FS-0O makes her series debut, along with Go-Buster Kero.
The busters throwing everything at the fully evolved Zeta. and the Zeta being unaffected by everything.
The takedown of Messiah. It starts with Go-Buster King charging at Zeta who shoots lightning at them. Out of nowhere come Go-Buster Li-Oh who gets boosted by Buster Hercules up to the Zeta's chest, where they plant the sword directly in his chest. Finally the Buster put all their power into Go-Buster Li-Oh who shoves the sword right down to the hilt and hits the Zeta with a chest beam.
While the above scene happens, the first Go-Busters' theme is playing in the background added that final level of awesome to it.
#45: Two Buglars actually get a moment of awesome as they find Escapes tablet and accidentally create a Metaroid.
Go-Buster Beet, riding Li-Oh and using the Li-Oh burst along with SJ-05 firing its guns to defeat Omochizord.
#49: The Go-Busters manage to lure Enter into a hanger back at base, despite his power, and hold him until they can be transported to Hyperspace. What makes this even more epic? The Go-Busters are well aware there may be no coming back.
#50: As expected, the Finale has plenty of these moments!
J takes a blow from Enter, but he keeps his ground, even as Enter continues to push down on his sword, trying to cut through his shoulder. Doubles as a Heartwarming Moment, since he's doing this to fulfill Jin's last wish.
After Enter's Soul Jar is destroyed, Enter claims he has one more trump card. Jin calmly tells him it's useless, since the rest of his data's gone anyway. Enter'sreaction is priceless.
During the final Humongous Mecha battle, Enter, thanks to the data he's stolen, is countering all of the Busters' attacks. So, how do they beat him? Hiromu throws him off by diverting all power to Ace's legs, letting his mech do super-speed! He then takes his sword, thrusts it into Megazord Omega, letting the others finish it off by blasting it.
And then we have the real final battle. In a nice twist on what we saw in the previous episode, the Busters take turns attacking Enter, this time seeming to have the upper hand as opposed to when he effortlessly deflected or absorbed all their attacks before. Everything seems to be going well... Until Enter smashes the Power Trio's visors.
For extra awesome, bear in mind that the events of #46 through to #50 took place over a couple of days! Those kids sure were busy.
Behind the scenes, Hideo Sakaki (Commander Takeshi Kuroki or "Kurorin" in Jin's case) caught a 'Peeping Tom' from taking upskirt pictures of high school girls in a bookstore and got said perpetrator arrested. You can view it here.