Fred Willard (1933-2020) was a comic actor who made a cameo appearance on Muppets Tonight in episode 205. He also appeared as a "Happy Healthy Monsters Network" announcer in Happy Healthy Monsters.
In 2006, Willard appeared as a celebrity guest in the pilot for the Henson Company's puppet talk show, Late Night Buffet. He later appeared as a guest in the Henson Alternative TV series Good Morning Today (2013) and No, You Shut Up! (2015).