1976: Refused to appear in any sketches unless alone or with Chevy Chase; general incoherence

1977: Missed rehearsal and tried (poorly) to ad-lib through performance

1977: Played 'Radio Radio' instead of 'Less Than Zero', the song they were supposed to play (eventually reinstated)

1978: Interacted poorly with cast and crew; made it obvious he was reading from cue cards

1979: Repeatedly went off-script to insert parts of his classic routines

1981: Played offensive songs while dancers destroyed the set

1982: Crumpled up a script and threw it in the face of writer Gary Kroeger

1982: After a fight with Dick Ebersol, Ebersol held a viewer call-in poll to see if this person should be banned; he was

1986: Performed drunk; lead singer used the F-word

1991: Lorne Michaels called him 'the biggest jerk to ever be on the show'

1992: Ripped up a picture of the Pope while performing

1993: Lit up a joint while perfoming; trashed their instruments on stage

1994: Performed introductory monologue on feminine hygiene

1996: Hung upside-down American flags on their instruments

1997: Verbal abuse of cast and crew; had previously insulted an openly gay performer (later returned)

2003: Wore Rastafarian outfit and fake dreadlocks to introduce Sean Paul, who this person called 'Sean John'