Saturday's SF Bike Expo was a decidedly gnarly time.  While the fleet of antique/art/project bikes, vendors, cross racing, and action on the pump track certainly entertained, AT's Showdown was the real highlight.  Unfortunately, I have no idea how to operate a camera or iMovie, so the (short) video lacking any real editing or sick Dropkick Murphy's track/some other song proving I have zero taste in music will have to satiate your appetite.  Don't worry, it includes a fantastic number of flips, kicks, spins and big air:

Also, Neil C. had an off-camera flash and, therefore, got some rad snaps of the event:

(Don't forget: the SF Bicycle Film Festival kicks off Wednesday.)