Chevy is one of the original "Not Ready for Primetime Players," but he's been under an on-again, off-again ban since 1997, when he reportedly slapped cast member Cheri Oteri in the back of the head. Will Ferrell reported the assault to Lorne, and Chevy insisted it was "a joke." Ha. Ha. Soooo funny.

Chevy seems to have been forgiven — at least by Lorne — since he appeared on the 40th anniversary special, but don't expect to see the notoriously volatile actor hosting again.