American character actor with thinning hair and a pained expression on his face, known primarily for his work on TV, Regalbuto made his TV debut as an alien intent on killing the title characters on "Mork and Mindy. " He was then cast as the ambitious junior partner of a law firm whose only goal was to take over the firm in the short-lived series "The Associates" (ABC, 1979-80), with Martin Short. In 1983, he was Tim Conway's assistant on "Ace Crawford, Private Eye" (CBS) and on ABC's "Street Hawk," a 1985 short-lived series, he was the engineer who had developed Rex Smith's super-charged motorcycle. But it wasn't until he was cast as the socially insecure newsman, Frank Fontana, on CBS' "Murphy Brown" (1988-98) that Regalbuto had an outlet to showcase his considerable comic talents. "Murphy Brown" also helped Regalbuto gain larger roles in TV-movies. He was particularly memorable in "Leona Helmsley: The Queen of Mean" (1990) as the one associate Helmsley (Suzanne Pleshette) couldn't buffalo. He was the lead opposite Morgan Fairchild in "Winter Block" (USA, 1991).