Jason convinced me that mountain biking is fun. I tried it a few times. I then bought a nice bike from a guy in SF for a real steal. Now I go riding as often as reasonably possible (e.g. twice a weekend). Some pictures:

Tilden, looking at SF (the smudge in the distance), 5/9/02:

Same spot in Tilden, looking at San Pablo reservoir:

Lake Anza, 8:30 AM, near the swimming area 5/29/02:

Another shot of Lake Anza (it's pretty small):

Tilden, looking at SF (clearer than 5/9), 6/8/02:

Tahoe, Great Flume Trail, 6/19/02:

Tahoe, Great Flume Trail, 6/19/02: