Another of my faves is Transylvania 6-5000, abra cadabra, hocus pocus. Funny as heck. Another one I haven't seen mentioned is Sylvester and the Beanstalk where he climbs up the beanstalk and finds a giant Tweety Bird. Elmer Fudd is the giant and he says, " Fee fi fo fat, i tawt i taw a puddy tat" That is one of the funniest lines i have ever seen.
Almost forgot: Yosemite Sam riding the camel says “whoa camel,” but the camel doesn’t stop. He says it again and again still the camel doesn’t stop. Finally he jumps off the camel and through the magic of animation he gets in front of it and whacks it with his rifle butt. “Wheh I say whoa, I mean WHOA!”