Date of Birth : Feb 27th 1940
American actor. Hesseman is known for his role as anti-disco disc jockey John “Dr. Johnny Fever” Caravella on the television sitcom WKRP in Cincinnati from 1978 – 1982, a role Hesseman prepared for by working as a DJ in San Francisco at KMPX-FM for several months. Hesseman is also remembered for his role as teacher Charlie Moore on the series Head of the Class from 1986 to 1990. He also played Sam Royer, the man who married Ann Romano (Bonnie Franklin) on One Day at a Time.
In 1995, Hesseman played the title role of the Marquis de Sade in Quills at the Geffen Playhouse in Westwood, California, which included one scene in which he was fully naked. In 2001, Hesseman had a recurring role for three episodes of That ’70s Show. In 2006, he appeared in two episodes of the ABC television series Boston Legal playing the unorthodox Judge Robert Thompson, as well as an episode of House. During his appearance as Judge Thompson, Hesseman paid homage to his role as Mr. Moore in the earlier ABC series by hearing a court case while sitting atop the judge’s bench, just as the character of Mr. Moore taught his class while sitting atop his desk.