Diedrich Bader is an American actor. He’s best known for his work in comedy shows and films. During the ’90s, he made his film debut in The Beverly Hillbillies. His breakthrough came after landing the role of Oswald Lee Harvey in the sitcom The Drew Carey Show. He starred on the show from 1995-2004. At the same time, he had performances in the films The Country Bears, Evil Alien Conquerors, and Napoleon Dynamite. He later appeared as Joel in Miss Congeniality 2: Armed and Fabulous. He went on to star as Tommy Barnett in the short-lived sitcom Center of the Universe. Apart from his acting roles on film and television, he’s also a prolific voice actor who have done various works on animated films and shows. Also as of 2016, he stars as Greg Otto in the sitcom American Housewife.