From Muppet Wiki

John Candy (1950-1994) was a popular comedic film and TV actor from Toronto, Canada. Part of the original cast of SCTV.

1985: Cameo appearance in Sesame Street Presents: Follow That Bird

1986: Portrayed his Yosh Schmenge character from SCTV on Sesame Street in a sketch, and reprised that role in a cameo in "Put Down the Duckie".

1986: Appeared in a photo spread, "John Candy's Ode to Spring", in Muppet Magazine issue 14.

1986: He starred in the Frank Oz-directed film Little Shop of Horrors.

1994: Appeared on Sesame Street's All-Star 25th Birthday special (archive footage only).