My biggest hobby is doing stuff with my family.
Canoeing
Traveling - In addition to WDW, in the last year we've been to Arkansas (see top Canoe picture),
Western Canada
Yucatan Peninsula in Mexico
Estes Park, Colorado
Monterey, California
Back to Estes Park, Colorado
During the next two months, we plan to go to Chicago, Michigan (just the wife and kids), Estes Park, Grand Tetons, and Yellowstone. We've also mixed in several trips closer to home - Goose Island State Park, Guadaloupe River, and Natural Bridge Caverns.
I do some cycling, but that's just to work and back and occasionally to a park with the kids. I'd say that our major family hobby is playing - on the swings in the backyard, in our pool or a neighborhood pool, at a park, etc.
I'm also a big gadget freak. We've got 8 computers in use in the house (mine, my wife's, each of the kid's, upstairs HTPC, downstairs HTPC, kid's laptop, parent's laptop). We've got 3 mp3 players, 1 portable video player, 2 Wii's, a PS3, an Xbox 360, 2 DSes, 3 HD-DVRs, a Kindle, 4 GPSes and an assortment of the other little gizmos. In the minivan, we have two headrest monitors connected to two DVD players. We also connect a Wii and a portable video player in to the system when we travel.
Here are some shots of the theater room.