Desi Arnaz Jr. was all over the TV dial from the time he was a boy into young adulthood. His first television credit was on "I Love Lucy" in 1957 when he was just a preschooler — he played a small spectator while the fictional Ricardo family dedicated a statue. As art increasingly began to imitate life, he went to snag much bigger roles and eventually became Lucille Ball's fictional (as well as real-life) son. From 1968 to 1972, he starred in "Here's Lucy" as Craig Carter, son of the widowed Lucy Carter who was of course played Ball (via IMDb).
Arnaz Jr. did other episodic TV work in the 70s, including appearances on "Mod Squad," "Love American Style," "Police Story," "The Love Boat," and "Fantasy Island." According to IMDb, his last screen credit was in the feature film "The Mambo King" in 1992, where he played his own father, Desi Arnaz, Sr. After that, Arnaz Jr. chose to drop out of the spotlight, but his parents' love for performing and the arts stuck with him throughout his later life.
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