With the airing this week of his twentieth commercial for 10-10-220, Tony Danza has lost his final shred of dignity. Danza’s decline began with the cancellation of his sitcom, “Hudson Street,” and continued through two more horrific television failures. The embarrassing ad campaign removed the final scrap of personal pride from Danza, freeing him to star in a TV movie with the Olsen twins and begin a month-long stint on “Hollywood Squares.” When reached for comment, Danza muttered, “Angela… Mona… Samantha…” before bursting into tears.