Growing up with that kind of publicity, and his parents' connections, he had little choice but to go into show business. In 1965, he started a boy band with his friends Dean Paul Martin (Dean Martin's son) and Billy Hinsche.
Here's Lucy (1968-72), as Lucy's teenage son Craig. And he landed roles in lots of movies.
Others were gay-subtext movies about the tragic consequences of boys who fall in love with boys (Billy Two Hats, Joyride, To Kill a Cop).
In 1983, he starred in a buddy-bonding series, Automan, about a computer whiz (Desi) who creates a computerized superhero (the hunky Chuck Wagner). Unfortunately, it was promoted as a comedy, and Desi didn't do comedy. He thought it would be a gritty urban drama.
After 13 episodes he left, and hasn't done a lot of acting since. He is still involved with his music, and he owns the Boulder Theater in Boulder City, Nevada.