This is one of the best clips I've found on youtube. Tommy Guerrero, former member of the Bones Brigade and one of the founders of Real Skateboards.

I don't normally just grab video from Youtube, but Tommy's style is so good. I constantly blabber about good style, so I thought seeing this vid might help a few people. Tommy skates in a way that is, well, not typical for today's skaters...

...loose trucks, turning, flowing, and speed. This clip is from the 1997 skate vid Non-Fiction, but even today, I don't think that many people skate the hills of San Francisco with this kind of speed and flow.