Movies. I think I know more about them than 99 percent of the people I know and 95 percent of the people I meet.
I like the fact that if they ever made a movie version of "Name that Tune," I could name damn near any movie within the first three seconds of it being on, even if I haven't seen it.
I like that I can recognize many composers' music without having to see the credits (and not just John Williams).
And I like that I once tried to coax eight of my friends to play as a team against me in the game "Scene it?" and their response was "Let's play Cranium!"
That's what's great about this site. There are several posters who see as many, if not more, movies than I do and can speak intelligently about them without saying things like, "But Brad Pitt looked so hot in 'Meet Joe Black!'" or "Tom Green was hilarious in that movie about getting fingered!"