April 30, 1975 (Age: 50)
Bree, Belgium
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.
2011
1997
2001
2008
1989
2019
2017
2000
1998
