In the video game, when you start the Gall Spaceport level, you can screw around on in the inside of the Outrider for a minute. Trying to press the R button to open any doors will annoy Leebo, who will soon tell you "Go away, Sir." If you keep it up.
The exchange between the pilot of a transport, Luke and Dash;
Suprosa Captain: This is captain of the Suprosa. Are you crazy? We're hauling fertilizer here! What kind of pirates are you?! Luke: We are not pirates. Like I said, we are with the Alliance. Dash: And maybe we have a big garden.
This exact sequence is in X-Wing Alliance as well.
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— Leia: (Chuckles; she had just thought exactly the same thing about it.) 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 went from irritated to amazed, slid to horror, then right into disgust.)
C-3PO and R2-D2 trying to fly the Millennium Falcon towards Xizor's Palace.
C-3PO: I'm trying to turn it right side up! Be quiet, Artoo!
This brilliant use of the Narrative Profanity Filter: "Lando stated, in a colorful fashion, that Han's ancestry was in question and his personal habits left much to be desired."
Along with this:
"Lando swore at the ship, a string of colorful phrases, including several graphic-if highly unlikely-descriptions of things he wished it would do to itself."
The scene where Luke and Dash Rendar are trying to get past 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.
During the space battle against Xizor at the end, the Rebels' puzzled reaction when the Executor and its fighter complement show up and attack Xizor's forces while ignoring the Rebels.