On how many TV sitcoms has Tony Danza appeared regularly as a character named Tony?
Four. He portrayed boxer/cabbie Tony Banta on Taxi (1978-82); ex-ballplayer turned domestic Tony Micelli on Who's the Boss? (1984-92); Det. Tony Canetti on Hudson Street (1995-96); and freelance sportswriter Tony DeMeo on The Tony Danza Show (1997).
Congratulations to Mochaface friend catnip who is the only one to get the answer (and leave one).