I'm sure there are plenty of D30 owners in the SF bay area. I'm in the east bay- here are some photos I took last week at a park in Fremont: http://www.bealecorner.net/D30/120801/LakeE.html
I used the D30, a tripod and the Canon 100mm f/2 lens, apparently an odd length, since I've yet to hear of anyone else using it! I got it for dance concerts with a 35mm Elan II body, for which it works well. On the D30 it's really too short for wildlife and too long for portraits, but if you look for shots, you can find them (--true with any lens, I think).
I have the Canon 50mm/1.8 and 50mm/1.4. Both are nice portrait lenses, and the f/1.4 focuses very quickly, while the F/1.8 hunts around. I have the older model Tamron 28-200 f/3.8-5.6 (as I recall) and the D30 really showed me how junky this lens is, especially at the long end. Yuck.
Just a few days ago I got the Canon 17-35/2.8L and it's very nice, great autofocus speed, but it is a real pro lens, it is large/heavy for casual use. I hear the equivalent Sigma model is a better value, and even that it is sharper except for the very center. I bought the Canon due to its fast autofocus.