Desi Arnaz Jr. plays his famous dad in the movie "The Mambo Kings" but says he's more interested in staying straight than in acting.

The 38-year-old recovering drug and alcohol addict spends most of his time working for a non-profit self-help group, he says in this week's USA Weekend magazine."Working on yourself is a full-time job," said Arnaz, who starred with his mother, Lucille Ball, in "Here's Lucy" in the late 1960s.

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During the '50s, Ball and Desi Arnaz starred in "I Love Lucy."

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