Actor
Johnny Galecki
Born 1975 · Bree, Belgium
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.
Acting
The Big Bang Theory
Leonard Hofstadter · 2007
In Time
Borel · 2011
Family Guy
Leonard Hofstadter (voice) · 1999
A Dog's Journey
Henry Montgomery · 2019
Hancock
Jeremy · 2008
Vanilla Sky
Peter Brown · 2001
National Lampoon's Christmas Vacation
Rusty Griswold · 1989
American Dad!
Arnie (voice) · 2005
My Name Is Earl
Scott · 2005
Batman Beyond
Knux (voice) · 1999
Bean
Stingo Wheelie · 1997
I Know What You Did Last Summer
Max Neurick · 1997
Entourage
Johnny Galecki · 2004
Roseanne
David Healy · 1988
Conan
Self · 2010
Rings
Gabriel Brown · 2017
Suicide Kings
Ira Reder · 1997
The Late Show with Stephen Colbert
Self - Guest · 2015
Bounce
Seth · 2000
The Conners
David Healy · 2018
CBGB
Terry Ork · 2013
The Opposite of Sex
Jason Bock · 1998
The Late Late Show with Craig Ferguson
Self · 2005
Lip Sync Battle
Self · 2015