Then: Straighter-arrow David Nelson, The Adventures of Ozzie & Harriet.
Now: Producer/director.
FYI:
Brother of Ricky Nelson; son of Ozzie and Harriet Nelson.
Role of David originally played by a child actor on the early radio version of Ozzie & Harriet. The real David and his real brother joined the show in 1949, remaining with it until 1954.
With 435 episodes, the TV version of Ozzie & Harriet (1952-1966) is the longest-running sitcom of all time.