Some of my favorites:

M*A*S*H

Hawkeye: (showing the contents of a care package that he had assembled for Cunningham) "...and here we have some shampoo. We're sorry but that's all we could come up with. They were all out of real poo."


Three Stooges

"Good work Larry! You keep it up, and I'll give you some C-A-N-D-Y!"

"Aw, I don't smoke."


Simpsons

Homer: "Aaugh! My pudding is trapped forever!"


MST3K - The Brain that Wouldn't Die

Surgeon (to his surgeon father while attempting to reanimate a corpse): "But didn't you say that do something right you have to test and experiment, test and experiment?"

Mike (riffing the movie): "But what does turning them into clowns PROVE, John?"

The_Scots"AAAUUGH! THE ROAD IS ATTACKING ME!!!"man