John Ratzenberger

John Ratzenberger is an American actor. He is most famous for his role as Cliff Clavin on the sitcom Cheers, a role he reprised in the Simpsons episode "Fear of Flying". He also has his own Food Network show and has appeared in every Pixar film.

Guest stars in season 6

Winona Ryder • Albert Brooks • Sara Gilbert • Kelsey Grammer • Phil Hartman • Jon Lovitz • Michelle Pfeiffer • Dr. Demento • Larry King • James Earl Jones • Meryl Streep • Dennis Franz • Ted Danson • Woody Harrelson • Rhea Perlman • John Ratzenberger • George Wendt • Anne Bancroft • Patrick Stewart • Dick Cavett • Johnny Unitas • Mel Brooks • Susan Sarandon • Mandy Patinkin • Frank Welker • Ron Taylor • Steve Allen • Tito Puente