I to was a mech warrior.. I was pretty heavy into it from 1995 to about 1998
Any way.. here is my list of hobbies:

Working on old Fords.. most recent project is a 1995 f150, sounds unexciting except that I put a 420hp motor and 4.10 gears in it.. it's lots of fun to drive a round, as it looks like a real peice of crap truck, but will go faster than just about anything else on the road.

Computer upgrades and following trends, my excuse is video games, but I just find the technology advancements interesting.

Shacking.. I post on shacknews.com a little bit, but mostly lerk.

woodworking is the newest time eater.. I'm building some diy speakers, these: http://www.selahaudio.com/id146.html
I doubt that mine will look near as nice as those, but I wasn't willing to pay the $3500 price for the boxes.