The Krabby thread reminded me of this recent incident. I assume a lot of folks have seen it but for those who haven't, here' Houston's Aubrey Coleman stepping on Chase Budinger. Personally I think it looks intentional. It happens well after the play has stopped, Budinger is in plain view of Coleman and Coleman is not off balance or moving at high speed.
http://www.youtube.com/watch?v=o4ZryYqFmoc
http://www.youtube.com/watch?v=o4ZryYqFmoc