I found this site through a post gear made about 5 months ago, and i have been hooked ever since. Its an amazing site with tons of awesometibits of knowledge. Anyway they recently did a peice on parkour (becaus eof casino royale) and i'd say it came out pretty good. I mean the whole athritis thing couls be seen as negative, but the guy works it well my favorite line is
"My first thought, so stereotypically Jewish it’s guilt-inducing, is a practical one: that cannot be good for the joints."
anyway it also has some videos that go along with it, just though i'd share it. I dont know if this is the rigth section but for some reason i couldn't find the "in the media section"