Funniest Scene
I'd say the funniest scene in this movie was when the ship's cook (who was obviously a teenager, despite working for the space navy), asks Robby the Robot to make booze. It's like, he hears that the robot can synthesize anything, and asks for "the stuff." Just the dialogue makes me laugh:
Robby the Robot: Can I be of service, sir?
Cook: Look, never mind the sir, mister, but I'm a stranger on this so called planet and I was just wondering if, well if you could tell me where I could... A guy could get a hold of the real stuff?
Robby the Robot: Real stuff?
Cook: Just for cooking purposes you understand. I take a big pride in my duties.
Robby the Robot: Pardon me, sir. Stuff?
Cook: [Pulls out bottle of bourbon] Oh, just about one jolt left. Oh, Genuine Ancient Rocket Bourbon. See here?
[Robby takes the bottle and empties it into his analyzer slot]
Cook: Well you low living contraption, I oughta take a can opener to you.
Robby the Robot: Quiet please, I am analyzing. BELCH! Yes, relatively simple alcohol molecules with traces of fusel oil. Would 60 gallons be sufficient?
Cook: Gallons?! Mister, I been from here to there in this galaxy and I just want you to know you're the most understanding soul I ever met up with!
My dad still quotes Robby when he says "Quiet, I am analyzing." BURP!!! That had to be the weirdest burp I ever heard, lol!
So the cook got blind stinking drunk the night the Id monster first attacked, and wakes up with NO hangover, claiming it wasn't natural.
I still think Robby was the best character in the movie :D.