Some of my faves (ones I could watch over and over)
Tropic Thunder
Shaun of the Dead
Team America
40 yo Virgin
Anchorman
Old School
Zach and Miri Make a Porno
Something about Mary
The Jerk
National Lampoon's Vacation
This is Spinal Tap
Young Frankenstein
Monty Python and the Holy Grail
Airplane