One of the videos at Vimeo highlighted recently in an article at Der Spiegel was of, well, two guys skateboarding down a mountain highway.
That doesn't sound very impressive, I know.
But, it's actually pretty remarkable, once you get past the initial banalities. (Just skip ahead to about 2:18.)
It's best to go watch it at the Vimeo site, where you get a somewhat up-scaled, high definition video.
Adam Kimmel presents: Claremont HD from adam kimmel on Vimeo.
Then, at Mightygodking, I ran across this pretty outstanding collection of bicycle artistry from Danny MacAskill.