Eephus
Footballguy
Comedy ages differently than drama.I was thinking even older when I posted. I have a very love/hate relationship with 70s movies, and probably could come up with few from that decade - Deer Hunter being one, and probably any comedy movie people would list for a best of decade list.
I think the verbal based comedy of the 30s and 40s holds up better today than the more character-centric comedies of the 70s and 80s. Both are prone to the occasional racist or sexist gag that's out of line with current attitudes.