"I have a mole?!"
–Robin Hood: Men in Tights
The hump moving from side to side was improvised by Marty Feldman who did it without telling anyone. The first time, anyway, I assume.
Also, IF memory serves, Kenneth Mars’ wooden arm changes sides at least once.
See #258.
One of my favorite bits from the movie is the few seconds leading up to “Class…dismissed.”
The joke that I had heard about for years, but had never seen, finally became available recently.
When they’re presenting “The Creature” onstage, Ygor is conspicuously lacking a hump.
Dr. Frankenstein: What happened to your hump?
Ygor: Never with tails!
at 11:51 in
A couple brain cells were wandering around in my head, met up, and reminded me of one that doesn’t seem to have been mentioned yet: In Star Wars: Attack of the Clones where Anakin leaps out in pursuit (IIRC it was Fett he was chasing) and Obi Wan says, in a resigned voice:
You have to watch the full length of the video. It’s before the “In a row?” discussion.
The movie Good Will Hunting includes an actual joke in the movie
Actually, there’s two, now that I think a about it; Minnie Driver, playing Skylar, tells one to the guys
The scene just after that with Teri Garr is really quite adorable.
Will (Matt Damon) and his psychiatrist Sean (Robin Williams) hug near the end of Good Will Hunting.
Will: “Does this violate the patient/doctor relationship?”
Sean: “Nah. Only if you grab my ass.”
Or the ad lib by Williams at the end of the movie:
Sean: Son of a bitch. He stole my line.
The Twilight Zone, ‘The Hunt’ (1962)
Hyder Simpson: Uh, Rachel… That’s my old woman. She won’t have any trouble getting past that fellow up the road, will she?
Angel: Rachel? No, not her. And she’ll be along directly, too, I’m told.
Hyder Simpson: Well, glad to hear it.
It’s in the commentary that Eric is biting his blade to keep from laughing. A little more than half way down.
You were watching the marathon, weren’t you? That’s one of my favorite episodes. I like it when the angel explains how some people walk into hell with their eyes wide open.
Aye.
One of my favourites as well. I just love the ‘Well, glad to hear it’ line! 
(never mind)
I didn’t know that, thanks.
Great comedic instinct, then. It makes an already hilarious scene even funnier.
Even better, when Dante yells at her as she’s walking across the parking lot, "Try not to suck any dicks on the way across the parking lot! some guy hears this, and starts to follow her, prompting Dante to yell at him, “Get back here!”
When I first heard the “Well, glad to hear it” line I thought of it as if he didn’t want her to have to grieve for him too long. Then later I thought that he meant that he wanted to be with her again.
I’m sure the character was thinking, ‘I’m glad to hear that she won’t have any trouble bypassing Hell, and that he was happy he’d see her soon.’ But the funny part was it sounded like, ‘Oh, I’m glad she’ll be dead soon!’