Spaceballs: Greatest parody ever!
History of the World 1: Some parts where pretty boring but there were many high lights also. I love the Inquisition song
The Naked Gun trilogy: I love Leslie Nielsen! He's a comedy God!
Superhero movie: It's stupid but Leslie Nielsen saves what there is to be safed
Johnny English, Mr Bean: Rowan Atkinson
The Return of Jafar: Stupid, stupid, pointless sequel and that's why it makes me laugh.
Lion King 3: I love the original
There are probably even more but I can't think of any.