Wow...you've only seen Airplane around ten times!?
I'm racking my brain to come up with one comedy that has really dated for me and, I have to say, I can't think of a single one. Funny, for me it's the opposite: I don't think comedy dates at all like dramas, thrillers or other kinds of films do.
Those kinds of films can date merely because of when they're set, how they're made, etc (even a serious thriller from the 50s or 60s can come off as kitcsh nowadays), but funny is funny. The Marx Brothers make me laugh just as much now as when I first saw them when I was a kid, and just as much as how the original audiences probably reacted back in the 20s and 30s.
Back on topic, and I saw the original GhostBusters not too long ago. As well as being amazed at hoe well the VFX held up, there wasn't anything in there that felt old at all, and it was great seing Murray, Aykroyd and Ramis looking so young and healthy.
My fear now is that we'll get them old and fat and they may as well call a third film GhostBusters 2000...
