 and "thirtysomething".His son David Boreanaz became famous for playing the vampire Angel in both "Buffy the Vampire Slayer" and its spin-off, "Angel", as well as his role as FBI Agent Seeley Booth on "Bones".Dave Thomas made an uncredited cameo appearance, as an extra in the FBI office, in the 100th episode of "Bones", "The Parts in the Sum of the Whole", which was directed by his son.