Clips: FEAR Live on SNL, 1981

From Wikipedia:

Fear was banned from playing again after the 1981 Halloween episode. With Donald Pleasence as host, the band played that night by request from Fear fan John Belushi, and they proceeded to play offensive songs (”I Don’t Care About You” and “Beef Balogna” among others) and bus in “dancers”. The band also used obscene language and the dancers destroyed the set with their slam dancing onstage. The situation was out of control to the extent that the damage of studio equipment forced Dave Wilson to end the three-song performance by cutting the audio and video to a commercial as they started to play “Let’s Have a War”.

This was supposedly also the last appearance of John Belushi on SNL before he died, although I couldn’t confirm that.