Ryan pulled together a very well-done video collage of photos he took of San Francisco Street Art / Graffiti while he was tooling around the City on his bicycle in 2006.
Some of my favorites are here: Mona Caron’s Duboce Bikeway Mural, f’rex (visible from the N-Judah).
Some of my favorites aren’t in the collection: the mural on the side of the building at the NW corner of Columbus and Broadway (thx to karbon69 for the click) and “One Tree” by RIGO [photo by kootenayvolcano]. There are others not included, including the murals on some buildings on Bay just up from Tower Records, but I can’t find pictures. Guess I’ll have to make some of my own.
[YouTube link from a link Ryan posted to SFist/labs/contribute last month]
[note: flickr has photo pool for San Francisco/murals. Check it out if this sort of thing interests you.]