I need less hobbies. Shit costs too much, and take too much time.
Computer Shit (gaming, repair, etc). I run a PC repair shop, so this doesn't really count, but I do love my FPS and MMOs, as well as the occasional well-made flash game.
Cooking. I love cooking. I like having people over to eat cooking. There's nothing like the feeling of watching people enjoy food you've made. It helps that my mom works at a William's-Sonoma part time over the holidays, so I "borrow" her 40% off to load up on all-clad and knives (I've got a Wusthoff set and a few Shuns, among others), as well as other toys like a Kitchenaid mixer, food processor, mandolin, and 2 Cuisinart ice cream makers. I thoroughly enjoy making deserts, and I love grilling. I use a Weber Q320 for the dirty work (yeah yeah, no charcoal; I don't get home till 9pm most nights, so waiting on that shit takes wayyyy too long). It heats fast and even, and doesn't drain your propane tank like bigger grills can.
Martial Arts. Specifically, Hapkido. My wife and I have run a school now for over 5 years. Hapkido is designed as a practical self defense style. It is korean, and utilizes many of the same strikes as the various TKD types. We do a lot of joint locks and arm bars, as well as sweeps and throws.
http://en.wikipedia.org/wiki/Hapkido
Music. I play clarinet and trombone. I started clarinet in middle school 15 years ago, and still play in various amateur groups locally. Trombone I learned in college because marching clarinet sucks.
Frisbee. Ultimate frisbee, though I've decided it's just too damn much running. Still a great past time when you have an empty football/soccer field, some beer, and some friends.
Woodworking. I have a garage-full of toys. My favorite is an old-school crafstman radial arm saw that I picked up for cheap off of craigslist. I also have a couple of miter saws, a band saw, a floor-stand drillpress, a benchtop sander, and a scroll saw, as well as an assortment of hand tools (18v Li-Ion kick ass). I have never parked my car in my garage. Unfortunately I don't have the skill to make very complicated stuff.
Reading real books. Almost all fantasy, from classics like Tolkein to newer stuff like Sanderson. I own every Dragonlance book printed, and many Forgotten Realms. Currently I'm anxiously awaiting A Memory of Light. Sanderson needs to write faster, dammit.
Politics. I'll never discuss politics or religion with customers, but I do love a debate among people that can agree to disagree. Being a liberal here in South Carolina does kind of suck.