hrm...many of my things have already been said but here's what I'm thinking off the top of my head:
motorcycle...I can't believe I ever lived without one and the years between owning one where very painful!
My car was my baby for a long time...still is but it has worn off some. Its a 2002 dodge stratus sedan, sporty yet room for 4-5 people or two people and a back seat full of reptiles and related items.
My computers, my wife is using the last gaming rig I built and I have to turn in my nice still new macbook pro next week when I change jobsBUT I have just ordered a barebones laptop and all the parts I need to build that will so kick arse compared to my macbook (other than the fact it won't run OSX).
My sword collection: a couple samari types, a replica from the original Highlander movies, a replica of the Blade movie sword...probably my favorite and VERY sharp!
Guns: even though I haven't gotten out out to shoot in the last couple years: P89 Special Edition, my old trusty .22 rifle for small game given to me by my grandfather.
My cell phone only because its the only phone number I use...its old and sucks, hoping to get a new one after I start my new job (I think they may issue me a blackberry!)
I think I'll stop here...I treasure just about all my "stuff" otherwise I wouldn't keep it.