This... I suppose will mainly refer to movies made in the 1960s or earlier (though it's possible I'll put some movies of that time in other categories, or even put some movies from the 70s in this one). I'm sure I'll link here to some movies in other categories, actually. Dunno what else to say, except of course that "classics" can include drama or comedy or other genres, I imagine.... Oh, and probably I'll give some consideration to the quality of a movie. Just being "old" isn't enough to make it a "classic."
See also film noir and musicals