From wiki:
On November 24, 2002, at Raymond James Stadium, Sapp drew criticism for "blocking" the Green Bay Packers' Chad Clifton during an interception return by the Buccaneers.
Clifton was jogging down field, away from the main action, and was blindsided by Sapp.
The hit sent Clifton to the hospital. He was hospitalized for almost a week and could not walk unaided for five more weeks. In 2005, the NFL Competition Committee agreed on new guidelines for "unnecessary roughness", making hits such as that suffered by Clifton illegal.
Packers' coach Mike Sherman approached Sapp and said to him "You're a chicken shit." In response, Sapp screamed at Sherman: "If you think you're so tough, why don't you put on a jersey?" Sapp later called Sherman: "a lying, shit-eating hound. ... If I was 25 years old and didn't have a kid and a conscience, I would have given him an ass-kicking right there at the 30-yard line." Sherman later said of Sapp: "The joviality that existed after
when a guy's lying on the ground, with numbness in his legs and fingers, I just thought that wasn't appropriate for any NFL player."
http://en.wikipedia.org/wiki/Warren_Sapp
"Blocking?" It wasn't that much different than stabbing someone in the back and laughing about it. Clifton could have been killed.
Sapp is a pro asshole. I hope he gets jail time.