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.
59 acting credits
Acting · 59
Family Guy
1999
American Dad!
2005
The Late Show with Stephen Colbert
2015
Conan
2010
The Big Bang Theory
2007
The Late Late Show with Craig Ferguson
2005
Entourage
2004
My Name Is Earl
2005
The Ellen DeGeneres Show
2003
Batman Beyond
1999
Stars in the House
2020
People's Choice Awards
1975
The Conners
2018
Blossom
1990
Lip Sync Battle
2015
Hope & Faith
2003
In Time
2011
Entertainment Tonight
1981
The Norm Show
1999
LAX
2004
Civil Wars
1991
Bean
1997
Hancock
2008
Vanilla Sky
2001
Roseanne
1988
Rings
2017
Hardball
1989
A Dog's Journey
2019
I Know What You Did Last Summer
1997
National Lampoon's Christmas Vacation
1989
American Dreamer
1990
Must See TV: An All Star Tribute to James Burrows
2016
Bounce
2000
CBGB
2013
Boulevard of Broken Dreams
2007
Happy Endings
2005
Blind Faith
1990
The Opposite of Sex
1998
Suicide Kings
1997
Billy
1992
I'm Chevy Chase and You're Not
2025
Prancer
1989
Chrystal
2004
A Night in the Life of Jimmy Reardon
1988
Bookies
2003
Table for Three
2009
The Cleanse
2018
Playing Mona Lisa
2000
Without Consent
1994
In Defense of a Married Man
1990
Murder Ordained
1987
Peep Show
—
Sudden Fury
1993
Backfield in Motion
1991
Unraveling the Mystery: A Big Bang Farewell
2019
Murder at My Door
1996
SciJinks
2018
The Little Dog Laughed
2020
Morgan's Ferry
2001