Blazing Saddles, pretty much every line is great. But this is pearler:
[the Johnsons load their guns and point them at Bart. Bart then points his own pistol at his head]
Bart: [low voice] Hold it! Next man makes a move, the **censor** gets it!
Olson Johnson: Hold it, men. He's not bluffing.
Dr. Sam Johnson: Listen to him, men. He's just crazy enough to do it!
Bart: [low voice] Drop it! Or I swear I'll blow this **censor**'s head all over this town!
Bart: [high-pitched voice] Oh, lo'dy, lo'd, he's desp'it! Do what he sayyyy, do what he sayyyy!
[Townspeople drop their guns. Bart jams the gun into his neck and drags himself through the crowd towards the station]
Harriet Johnson: Isn't anybody going to help that poor man?
Dr. Sam Johnson: Hush, Harriet! That's a sure way to get him killed!
Bart: [high-pitched voice] Oooh! He'p me, he'p me! Somebody he'p me! He'p me! He'p me! He'p me!
Bart: [low voice] Shut up!
[Bart places his hand over his own mouth, then drags himself through the door into his office]
Bart: Ooh, baby, you are so talented!
[looks into the camera]
Bart: And they are so *dumb*!