Name and IMDb ID:

Johnny Galecki | nm0301959

Born:

April 30, 1975 in Bree, Belgium

Department:

Acting

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 Bang Theory.