Profile photo of Johnny Galecki

Johnny Galecki

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.

Filmography

2019
A Dog's Journey

as Henry Montgomery

Movie
2011
In Time

as Borel

Movie
1989
National Lampoon's Christmas Vacation

as Rusty Griswold

Movie
2007
The Big Bang Theory

as Leonard Hofstadter

TV Show