Oz is best known for his work as a puppeteer, performing with Jim Henson's Muppets. His characters have included 'Miss Piggy', 'Fozzie Bear', and 'Sam the Eagle' on "The Muppet Show", and 'Grover', Cookie Monster, and Bert on "Sesame Street", among many others. In addition to performing a variety of characters, Oz has been one of the primary collaborators responsible for the development of the "Muppets" over the last 30 years. Oz has performed as a Muppeteer in over 75 movies, video releases, and TV specials, as well as countless other public appearances, episodes of "Sesame Street", and other Jim Henson series. His puppetry work spans from 1969 to the present day.