He is best known as a Muppet performer on "Sesame Street", "The Muppet Show", "Fraggle Rock", and other projects for The Jim Henson Company. His roles on "The Muppet Show" included Scooter, Statler, Janice, Beaker, and Sweetums and characters on Sesame Street include Gladys the Cow, Don Music, and Forgetful Jones.