I used to collect MTG, but I stopped in 1998 or so. I also used to collect anime cels, as in the painted images that made up every frame of animation on screen, at least up until the digital painting revolution. I stopped collecting those in '05 or '06, mostly because shit was expensive, and there was very little new stuff coming out that was cel animated. I have scans of most of my cels up at:
http://gallery.hinome.net

I'm really proud of my Macross opening cel, being such a seminal series, and from a sequence I haven't seen on the market since I got mine.


I also really like Utena, and have a decent collection of cels from the movie and tv series:


Other than that, I don't really collect much now a days. I collected some japanese j-hiphop group cd's from ~2003-2007, but I stopped caring about that a while ago.