Action and sci-fi primarily. I don't mind some comedies and "chick-flicks", but most of the time I'll buy them on sale when they're on DVD. We go to the cinema to see the action and sci-fi ones, and then buy them on DVD.
But I do love me some Disney movies! I'm building a collection of Disney movies that I loved when I was younger. I'd like for my kids to grow up with "old-school Disney". I was looking at my list and now I have quotes from The Rescuers going through my brain. Must find it!