Johnny Galecki
Biography
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.
Known For
The Big Bang Theory
2007
In Time
2011
Hancock
2008
Family Guy
1999
Vanilla Sky
2001
I Know What You Did Last Summer
1997
National Lampoon's Christmas Vacation
1989
Rings
2017
Bean
1997
American Dad!
2005
A Dog's Journey
2019
My Name Is Earl
2005
Entourage
2004
Batman Beyond
1999
Bounce
2000