I totally forgot, I also have a large collection, on display in custom cases, of HO scale automobiles and trucks. Primarily made in Germany (Herpa, Wiking, etc) and Japan (Takara). I have about 400+ cars that I started collecting in the late 70s early 80s. The love the detail that these manufacterers put on these very small cars. I used to have a large train set but I sold all that off (Except for a small American Flyer set) and I kept all the cars I had on the large layout. The custom display cases were made for Matchbox cars, just plain black Polystyrene with a clear sliding front. I actually cut out many of the dividers and sanded the seam down smooth and then had plastic mirror pieces cut to fit on the back wall of the case strip by strip. I just used double stick tape to hold the mirrors on and I hung the cases all around the room. Makes for a great conversation piece and I get to "own" all the exotic cars I could never afford.
I collect a lot of different things but Star Wars is what got me started. I've been trying to keep up with all the 3 3/4" figures but I do pick up other things like Sideshow 12", Unleashed battle-packs and Galactic Heroes. Besides Star Wars I also collect LOTR, Simpsons, Muppets, McFarlane Military, McFarlane Sports (local team stuff), the New Hasbro Indy figures and other lines that catch my eye. I do have one collection of toys that most people probably never heard of but I know at least one other member here has...Playmobil. They're growing in popularity with collectors especially people who like to customize. That's about it. Oh yeah I also collect all kinds of shark merchandise...toys, games, posters, dvds, etc.