I collect music (cd's still), comics (mostly DC/Vertigo but have started dabbling into Marvel recenty, most recently Cable and Deadpool, Zoids, Pokémon plushies (I just noticed the other day that they ~finally~ made Solosis! biggrin) and action figures.
I collect Naruto stuff. I don't do it as much as I used to though. I usually collected the cards but I don't actually know how to use them lol and I also have some poster books, magazines, plushies, T-shirts, DVDS and the manga books which I still readwhee
I'm actually starting to collect Adventure Time stuff because its just so cute4laugh