40K, Large Imperium force <.<
I have Marines, Grey Knights, enough Cadians to clog the eye of terror... well not quite but I have a fair few <.<
I also have some of the LOTR models and an Ogre battalion but I don't really collect/play them. I haven't done anything with my collection in years though, GW's price gouging just sent me away from the hobby.
I also have a load of black library novels and almost all of the video games.
Nice. Yeah GW's pricing is ridiculous, but my local, friendly, neighborhood game shop/comic book store offers a membership discount that makes the models a little more affordable. I run a kill team of Space wolves (11 man) for 40K, I am saving up to make it an army though.