Johnny Galecki
50 years old
Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big B...
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The Simpsons
Live Action Version
The satiric adventures of a working-class family in the misfit city of Springfield.
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