In this video from the 1930s, a man hops away from the dinner table and goes on an amazing adventure up building walls, out of windows, and inside a car tire. The part where he's clambering up the wall with a kid on his back made me a bit nervous!
I know there's some debate as to what should be called parkour v. freerunning — I'm not exactly sure which this qualifies as, but nonetheless it's totally cool and enjoyable to watch.
I'm a contributing editor here at Boing Boing. I also have a blog (TokyoMango), a book (Urawaza), and I freelance for Wired, Make, the NY Times Magazine, PRI's Studio360, etc. I'm @tokyomango on Twitter.