Favorite movie of all time is pretty tough to say, and I agree with what has been said about favorite vs. best movie, totally different. Anyway, here are a few of my favorites:
Dumb and Dumber- It is what it is, maybe the funniest movie ever made, but declining in re-watch-ability as the years pass.
Finding Forrester - I've just always loved this movie since I was in high school, I watched it again recently and was pleasantly surprised by how much I still like it.
Good Will Hunting - Didn't see it until recently, but I loved it, incredible movie.
Catch Me If You Can - True or mostly true stories always pull me in, just loved this one.
What a girl Wants - Yes, you read that right, yes it is the one with Amanda Bynes. No, I don't know why I like it.
Recent Favorites:
Step Brothers I laughed for almost an hour straight, awful movie, awful awesome.