all the newer movies leave me cold, in terms of humor which is mostly crass and not generally that clever even. for humor, i have to travel back in time to before the 90s. "smokey and the bandit" never fails to tickle me, it was crass but also clever in many ways, some not obvious. then there is "freebie and the bean" which is outright crazy also, in a horror vein of morbid humor, there is "reanimator" which made me scream and howl- with laughter! that's all i can think of, for now.
OH! how could i forget "paint your wagon"? that was a scream that was also an offbeat musical that was bent in its own way.
and i keep remembering other ones now, darn it one MUST give "it's a mad mad mad mad world" a chance, it is one of those "steeplechase" kind of comedies that starred everybody that was anybody in hollywood back in the day. "dr. strangelove (or how i stopped worrying and learned to love the bomb)" would have to be the blackest comedy ever filmed, but it is also well worth watching. then there is peter seller's last real pink panther film, "the revenge of the pink panther" which is about as funny as "a shot in the dark" - consider watching them both. "star trek IV" was also about the funniest of the TOS movies, it had a real schtick going on between kirk and spock. i better stop now before i stay up all night long.