Alright, I'll go again. (Don't fuck this up ThrashO - I have the power to ban you.)
ThrashO gave me Rodney Dangerfield so I'll give Rodney some respect:
Rodney Dangerfield movie I love: Back to School - if you want to see Rodney in his prime doing what he does best, this is my pick. He's a rich businessman who enters into college to help his son get through school, and along the way he shows everybody how to party and have a good time. Plus, he pulls of The Triple Lindy... the most difficult dive of all. Behold:
Rodney Dangerfield movie I like: Caddyshack - because it's hilarious and you get to see Rodney enrage a bunch of yuppies, so how can you go wrong with that?
Rodney Dangerfield movie I don't like: Little Nicky - I just didn't like the movie at all. It's not Rodney's fault - the blame rests upon the writers.
Rodney Dangerfield honorable mention: Natural Born Killers - a completely different role for Rodney, portraying a sadistic father, but I thought he did a good job with it.