NOW: Johnny Galecki
Following a string of small film and television roles, Galecki, 37, found major success in 2007 as Leonard Hofstadter on the CBS sitcom “The Big Bang Theory.” Two of Galecki’s former “Roseanne” cast mates, Sara Gilbert and Laurie Metcalf, have appeared on the series. The actor, who has been dating actress Kelli Garner since 2011, lives on a vineyard in Santa Margarita, California. —XFINITY Entertainment Staff (Photo by Frazer Harrison/Getty Images)
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