YouTube - Cat on a treadmill
http://www.youtube.com/watch?eurl=http://www.treadmill-desk.com/search?updated-max=2007-07-20T13:41:00-06:00&max-results=5&v=bEQKotnQ2oo
"Here is our cat going for a walk"
YouTube - OK Go - Here It Goes Again
http://www.youtube.com/watch?eurl=&v=pv5zWaTEVkI
Awesome choreographed treadmill dancing.