Apparently this is old, but I had never seen it before, so here you go:
The Ok GO! Ping Pong Workout video:
http://boss.streamos.com/wmedia/capi001/okgo/pingpong/video/pingpong_300.asx
If the link doesn’t work, it’s also at:
http://www.okgo.net/video.asp and it’s the last link.