Cannibal the Musical. It's the first film that Trey Parker and Matt Stone of South Park fame made out of college. It is basically about Alfred Packard (who was a famous cannibal who ate his companions in the Colorado mountains) and it's...a musical. Me and my friends kinda had a cult following of this movie and it was our little inside joke. The movie is super cheesy and was made by Troma films I think, so you kinda get an idea of what its like. Check it out, I watch it once a year.
Van Wilder (Ryan Reynolds is amazingly on point with comedy) - and Shaun of the Dead - best 'horror' comedy movie I have ever seen!
I love watching the movie Chupke Chupke(bollywood movie), It is one of the best comedies that I have seen.