Piazza's other film appearances include The Candy Snatchers (1973); Piazza played a dramatic role in an episode of Barnaby Jones, titled “Bond of Fear” (04/15/1975),The Bad News Bears (1976), I Never Promised You a Rose Garden (1977), Nightwing (1979), Peter Bogdanovich's Mask (1985), Clean and Sober (1988), and Guilty by Suspicion (1991), in which he portrayed Hollywood film director/mogul Darryl F. Zanuck.