John Ritter (1948-2003) was a television actor, best known for his role as Jack Tripper in Three's Company.
- 1982 — guest star on The Fantastic Miss Piggy Show.
- 1983 — appeared in the Spring issue of Muppet Magazine.
- 1990 — appeared as Baby Gonzo's client in a live segment taped for the Muppet Babies episode "A Punch Line to the Tummy".
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