R2-D2 turning into a fire extinguisher. Also the scene in The Empire Strikes Back when he gets eaten and vomited up by a monster, and does the robot equivalent of vomiting in response.
Also from Empire: The scene where Yoda goes through Luke's supplies and fights R2-D2 over food.
And also from Empire: The Millenium Falcon is having trouble evading Imperial TIE Fighters. Han yells for Chewie to get him the hydrospanner. Chewie brings the tool tray over to Han's workplace (a hole in the floor). Han grabs the tool and ducks back down. The ship rocks, and the tool tray falls on Han's head.
When Luke arrives at the cantina in Mos Eisley we are given a few shots of the... local fauna, where the least weird things are Rubber-Forehead Aliens. Then the barman points at them shouting, "We don't serve their kind here!". He then clarifies that he was talking about the droids.
Fridge Brilliance: The anti-droid prejudice is probably a holdover from the days of the Clone Wars, in which the Republic fought against the battle droids of the Trade Federation and Techno-Union Army.
Han Solo's observation when they are in the garbage chute:
Han Solo: One thing's for sure; we're all gonna be a lot thinner.
When the rebels are sneaking into the shield generator on Endor, and Luke tells Han to be careful so he is not seen. Han responds with a cocky, "Hey. It's me!" The look Luke and Leia exchange is priceless.
On a similar note, the enormously smug grin Han gives the Imperials after he tricks them into opening the door.
Han: Let him have it. It's not wise to upset a Wookiee.
Threepio: But sir, nobody worries about upsetting a droid.
Han: That's 'cause droids don't pull people's arms out of their sockets when they lose. Wookiees are known to do that.
Threepio: I see your point, sir. I suggest a new strategy, R2: let the Wookiee win.
Chewie sitting back during this discussion, clearly looking smug at this bit of information about his race.
One moment in Return of the Jedi is when the Han's squad, now teamed up with the Ewoks, begin their assault on the Death Star mk II's shield generator. Just as their figuring out how to deal with the guards without raising the alarm, one bold Ewok scurries onto the group. Just when the rebels think this is turning into a Leeroy Jenkins moment, he takes off on a stormtrooper's speeder bike, causing most of the guards to chase after him. Han's summation acts as the punchline;
Han: Not bad for a little fuzzball - Now there's only one left.
Although only found in the script and novelization, there's something really amusing about the line "Ben reacts to Solo's stupid attempt to impress them with obvious misinformation".
During the first act of Return of the Jedi, Han and Luke have this exchange as they dragged out to face Jabba's wrath:
Han: How we doing?
Luke: Same as always.
Han: That bad, huh?
A visually impaired Han trying to aim a blaster at the Sarlacc's tentacle, which is around Lando's leg and dragging them all into the pit, while the skiff is tipping over.
Lando: Wait, I thought you said you were blind!
Han: It's alright, I can see a lot better now.
Han's line "Threepio! You tell that slimy piece of worm-ridden filth he'll get no such pleasure from us!" is much funnier in the novelization, where he begins saying it while unknowingly facing the wrong way, then Chewbacca turns him around to face the sail barge so he can finish it.
This is sort of a blink-and-you'll-miss-it moment, but this conversation between Threepio and Artoo in Empire Strikes Back on Hoth is hysterical:
Threepio: Don't try to blame me. I didn't tell you to turn on the thermal heater, I merely commented that it was freezing in the princess's chambers.
Artoo: beep beep beep.
Threepio:But it's supposed to be freezing! How we're going to dry out all her clothes, I'll never know, but -
Artoo: *bleeps sourly*
Threepio: Oh, switch off!
From The Empire Strikes Back, when they find out that the cave they landed in isn't a cave.
Han: There's no time to discuss this in a committee!
Leia: I AM NOT A COMMITTEE!
(3PO comes after them, then stumbles back down the hallway he came out of with a girly scream)
When Han and Leia are making out in the passageway onboard the Falcon, after while 3P0 ruins the moment by excitedly walking in on them and giving them some irrelevant news about the hyperdrive. Han's reaction to being cockblocked by a droid is hilarious.
More of a Hilarious in Hindsight moment, but in Ep. 4, A New Hope, after Leia is captured by storm troopers she, naturally having attitude, gives attitude to Vader. But if you think about it, Vader is Luke's father, right? And Luke and Leia are twins, right? So then that makes Vader Leia's father! She's backsassing her father!!!
In Return of the Jedi, after the Super Star Destroyer crashes into the Death Star, the Rebels on Admiral Ackbar's ship start cheering wildly. And if you listen carefully, you can hear someone exclaim, "DIE, DICKHEADS!"
Also hilarious is the reactions of Admiral Piett and a second observing officer on the Super Star Destroyer's bridge just before the A-wing crashes into it.
Vader tells the bounty hunters that they're free to use any means at their disposal to find the Millennium Falcon, but he wants the passengers alive. "No disintegrations," he says, pointing right at Boba Fett as if to say, "This means you."
The best part is Fett's response- he just sorta looks down dejectedly, as if he were silently complaining.
In Empire, Yoda standing on Luke's feet when he's doing a handstand and telling him to concentrate as he levitating a rock. Then Luke's X-wing sinks deeper into the lake and Luke loses his balance and he falls and so does Yoda! Yoda: "Concen-TRAAAATE!. Yoda's expression as he falls and his pissed off look at Luke afterwards is hilarious!
When Luke tells the Emperor "Your overconfidence is your weakness" near the end of Return of the Jedi, the way Palpatine delivers the rebuttal "Your faith in your friends is yours" always makes it seem like he might as well have been saying "Yeah, well, your mother."
When Grand Moff Tarkin realizes Leia lied to him about the location of the rebel base. He's quite shocked and indignant considering he lied to her about not vaporizing her homeworld if she gave him that information.
"The ability to speak does not make you intelligent."
Obi-Wan is chock full of sassy little one liners scattered throughout Episodes II and III
Obi-Wan immediately after killing Grievous with a blaster of all things:
Obi-Wan: SO uncivilized...
Becomes even funnier when you relize that he's not referring to Grievous, he's referring to the act of using a blaster. It's a callback to a line in A New Hope, in which he describes the lightsaber as a "weapon of elegance" and subtly expresses disdain for blasters.
From The Phantom Menace - watch Padme's expression when she hears that Anakin has never finished a podrace till then.
The scene where Anakin and Qui-Gon are discussing podracing while Jar Jar is snagging food from Qui-Gon's plate with his tongue:
Qui-Gon: You must have Jedi reflexes if you race pods.
Jar Jar's tongue whips out, Qui-Gon catches it in the blink of an eye, completely casually
Qui-Gon: Don't do that again.
As thanks for him helping establish an alliance between the Gungans and Naboo, Boss Nass makes Jar Jar Binks a general in the Gungan army. Jar Jar faints almost immediately, and Nass's response is to laugh, before casually walking over him to discuss war plans.
"Why do I get the feeling you're going to be the death of me?" Foreshadowing at its very best.
Also, Yoda transforming into a Tasmanian Devil-caliber spinning bouncing whirlwind of lightsaber fury for his duel with Count Douku... and then picking up his staff afterward and shuffling away like an enfeebled old man.
Obi-Wan: Can you fly a cruiser like this? Anakin: You mean, do I know how to land what's left of this thing? Obi-Wan: Well? Anakin: Under the circumstances, I'd say the ability to pilot this thing is irrelevant. Strap yourselves in.
Battle droid: "Hands up, Jedi!"
Obi-Wan and Anakin pause, look behind them and slice the battle droids to bits.
Obi-Wan, who has been knocked unconscious, comes to while hanging upside down in an elevator shaft with the Chancellor clinging to Anakin's leg. The only thing he says is "Did I miss something?"
Anakin and Padme are brought into the arena, met by the already chained up Obi-Wan:
Obi-Wan: I was beginning to wonder if you'd gotten my message.
Anakin: I transmitted it to Coruscant as you requested, Master. Then we decided to come rescue you.
In the Labyrinth of Evil novel, the Noodle Incident mentioned in Episode III is elaborated upon. During an underground commando raid on Cato Nemoidia that Anakin and Obi-Wan are leading, the Jedi split up, with one team to act as a diversion. Obi-Wan and the majority of the force engage the majority of the droids in underground storage bays, and Obi-Wan accidentally deflects a blaster bolt into a canister of spores. Thinking quickly, he reaches for his breather mask, but discovers it to be missing. Cue Anakin getting a message from Obi-Wan's second-in-command, Commander Cody, that they need assistance. Puzzled why the larger force would need assistance, Anakin remembers something, and pulls out of his pocket... Obi-Wan's breather mask. Frantic, he races back to the tunnels, to discover Obi-Wan falling all over himself, intoxicated by the spores, and humorously declares that Obi-Wan has invented a new lightsaber form. Anakin then discovers that Obi-Wan single-handedly destroyed over fifty droidsdespite being completely intoxicated.
"What the Empire would have done was build a supercolossal Yuuzhan Vong-killing battle machine. They would have called it the Nova Colossus or the Galaxy Destructor or the Nostril of Palpatine or something equally grandiose‚Ä¶ And you know what would have happened? It wouldn't have worked. They'd forget to bolt down a metal plate over an access hatch leading to the main reactors, or some other mistake, and a hotshot enemy pilot would drop a bomb down there and blow the whole thing up. Now that's what the Empire would have done." Thank you General Solo, the EU so rarely does you justice.
Ganner Rhysode (in Yuuzhan Vong disguise) Pol dwag, kane a bar. [(phrase unknown), dung of a rotting meat maggot] Yuuzhan Vong: Kanabar? [Low-caste person] Ganner: Dwi, kane a bar! [Yes, dung of a rotting meat maggot] Yuuzhan Vong: Yadag dakl, ignot! [(Meaning unknown, but certainly an angry response)]
Matt Stover's Shatterpoint has a ton of these. I'm fairly certain the best is Mace grabbing Nick just before they jump out of a gunship. Without parachutes.
Nick: Don't tell me.
Mace: (deadpan) All right. (They jump out)
Mace: (mouths) You told me not to tell you.
(Don't worry, they live) Nick spent the rest of the fall complaining about "having to end his young life as 'some fraggin' nikkle nut-brained Jedi Master's straight man.' "
Or else it's his line immediately after seizing control of a militia gunship:
Nick: " Fire control? For me? Oh, General, you shouldn't have!"
Mace: (deadpan) "I realize that."
In Heir to the Empire, Han lands the Falcon in the dense forests of Wayland, a maneuver that required him to tilt the Falcon sideways at one point to squeeze in.
Lando: Come on, I spent an hour in the galley fixing this. Everybody dig in!
Chewie: (Growls something that doesn't sound complimentary.)
Lando: Hey pal, you don't like it, you cook next time.
Luke: Giju stew? It looks like old boot plastic and fertilizer drenched in pond scum. Smells like it too-
Lando: Fine, fine! Don't eat it, that'll just mean more for me. (Eats a spoonful of it.) See? It tastes great, it - (His expression goes from irritated to amazed, slides to horror, then right into disgust.)
What makes that scene really funny is that Leia is thinking the exact thing that Luke says about the stew.
The scene where Luke and Dash Rendar are trying to bribe a droid.
Dash: *Grins and pulls out his blaster* Okay, Goldie. My name is Man with a Blaster About to Cook You. Either you open the door or your busy Bothan is going to have to get himself a new receptionist.
The droid: Oh, dear.
Dash: And no security alarms, either. I'm watching you real carefully. Up, and do the door manually.
The droid: Very well, Man with a Blaster About to Cook You.
When Luke, Lando, Dash and Chewie are walking through the sewers to Xizor's palace, and Chewie has just nearly fallen into the stuff.
Lando: *Chuckles* Yeah, be careful, you big clumsy - yow! *Skids and sits down in the sludge, getting his backside soaked.*
Dash: You should have worn old clothes.
Lando: Hey, Rendar, I don't have any old clothes.
Dash: You do now. I don't think you'll ever get 'em clean enough to wear in public. They'd drum you right out of the Elite Stormtroopers smelling like that.
Lando: Shut up.
"Lando swore at the ship, a long string of highly colorful phrases describing what he wished the ship would go do with itself."
A great one towards the end of The Ahakista Gambit story arc of the Star Wars: Rebellion series. Wyl Tarson and Laynara are inspecting "one of those impenetrable doors" (don't you just hate them?) that they need to get through. Not to worry, they've brought tech expert and Snarky Non-Human Sidekick Baco Par along to open it. Then they turn around to see Baco pointing a blaster at them. He knows they're planning to betray him, he's a little ticked off that they kidnapped him for this caper, and the Empire can have the galaxy.
Baco: Some people just want to be left alone! Some people just aren't good enough to make a difference! Don't you get that?! Laynara: (plucks Baco's blaster out of his hand) You're shaking. Don't be afraid, Baco—you can do this. Baco: Yes, I—you wouldn't happen to have a drink on you, do you? Laynara: No. Baco: I suppose I'd better get on with it, then.
The disgruntled teammate's cut-and-run gambit subverted in nothing flat.
While the totally Canon Discontinuity comic books starring Tag & Bink might be considered a Funny Moment for Star Wars comics generally, they have their own when Imperial agents shoot the spy who gave Tag and Bink information about the second Death Star. The spy's name? Manny Both-Hans.
Retired Imperial Soldier:(narrating over a splash panel of Ewoks running from giant bits of flaming shrapnel) At least I can take comfort in the fact that when thirty billion tons of metal explodes in the lower atmosphere of a small moon, it's only got one place to go.
"Definition: Love is making a shot to the knees of a target 120 kilometres away using an Aratech sniper rifle with a tri-light scope."
His knock-off brand, the HK-50 series, can get some good ones too:
Mocking Query: Coooorta? Coorta, are you dead yet?
An absolute classic from the sequel:
Exile: [Force Persuade] Give me all your credits and jump into that pit over there.
Exchange Mook #1: Yes. Jumping into pit is good.
Exchange Mook #2: Get to ground faster that way.
At this point, some followers will react with a light-side style Influence reaction...
Rakatan Elder Councillor: Is this some type of test, Revan? Some type of trick? You came seeking our aid; you came in search of a way to enter the Temple of the Ancients. You claimed to be seeking a way to destroy the Star Forge, and we were foolish enough to believe you. Unaware of your true nature, we helped you enter the Temple. But you betrayed us, Revan. Instead of destroying the terrible legacy of our ancestors, you unleashed the evil of the Star Forge upon an unsuspecting galaxy. And now you stand before the Council of Elders once more. And once more we ask you: for what reason have you returned, Revan?
Revan: Uh... I need to get into the Temple so I can destroy the Star Forge.
During the questions for what kind of Jedi you'll be:
There is a locked door, and you need to get to the other side. What do you do?
Vossk: There are the Twin Suns, two Twi'lek slaves from Ryloth, slaves who killed their masters and developed a taste for it. They have mastered a dance of death. Very beautiful, very dangerous.
Exile: Two beautiful Twi'leks are hunting me? How is that bad?
Brianna:* rolls eyes*
Carth and Bastila play off each other so very well:
Carth: Wow she, er, really misses her droid, doesn't she?
Bastila: There's no need to make fun of her Carth, she's obviously desperate.
Carth: I'll say...
Bastila: Carth! Enough!
From that same quest:
C8-42: She... she tried to treat me as her dead husband. It was not healthy for her. Player: Er... ALL the time? C8-42: You don't want to know... Player: Um... probably not...
And if you decide to take the droid back to his master:
Elise: Don't worry. I'm going to hug you and oil you and care for you and make sure you never get away, ever again. C8-42: Please kill me.
Bastila: [To a Sith] Ignore Carth. He's mentally deficient. And he drools.
Either of them plus Mission is a good bet, too. For instance, one of Mission and Bastila's conversations opens with Mission asking Bastila if she's ever used the Force for pranks, which she denies rather vehemently. Yes, the conversation involves a Force-assisted pratfall.
The Force Unleashed, first level, where you play as Darth Vader. When you kill a certain number of Stormtroopers:
Taking out an enemy Jedi/Sith hero in Battlefront. Ways to do this include: grenading them out a window, landing a starfighter on top of them, running them over with a fast enough vehicle (ex: speeder bike), etc.
Imperial Admiral: As you can see, Snookums, the whole crew has been putting in overtime... in fact, I think the Christmas recital will be the bestest in years! Little Timmy's Drummer Boy is—
Darth Vader: What I see, Choralmeister Lumpy, is that no has been washing these windows in my absence! This ship isn't your personal garbage can, young man!
In Battlefront 2, if you're playing as the Separatists and get enough kills to play as Jango Fett, sometimes you may hear a clone say something along the lines of "It's Jango Fett! And he's brought his head!"
A lot of normal soldiers in in Battlefront 2 will make comments on the appearance of special characters, usually along the lines of "Oh Crap, it's him!"
The Party Mode cheat code. Cartoony "Pow" effects and confetti popping out when you hit things with a lightsaber. Such fun.
The Star Tours opening commercial. Darth Vader wants to ride the Star Tours. It's not open. So he spends the day at Disneyland! Even funnier when it goes from the normal Imperial March to a whimsical variation! Then, there's the end.
The text crawl at the beginning of the films... And then below that are the characters using chatroom names and criticizing the text crawl as if it were an actual online post and one even complimenting it.
When Obi Wan is giving Luke his lightsaber, it suddenly changes into a commercial format.
The behind-the-scenes documentary Empire of Dreams has the cast relate some pretty amusing moments from the film's production. One of the funniest is when Mark Hamill talks about the moment when the Executive Meddling just went a little too far. They got concerned that Chewbacca was not wearing any clothing, going so far as to suggest that he wear lederhosen . His summation of it became something of a meme and possibly the only reason why there is a page on pants in Wookieepedia at all.
Mark: Of all the things to worry about...The wookiee has no pants.