Johnny Galecki
Acting
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.
As actor 60
The Late Show with Stephen Colbert
2015
Family Guy
1999
American Dad!
2005
Conan
2010
The Late Late Show with Craig Ferguson
2005
Entourage
2004
The Big Bang Theory
2007
The Talk
2010
The Ellen DeGeneres Show
2003
My Name Is Earl
2005
People's Choice Awards
1975
Batman Beyond
1999
The Conners
2018
Blossom
1990
In Time
2011
Lip Sync Battle
2015
Hope & Faith
2003
Stars in the House
2020
Vanilla Sky
2001
Hancock
2008
Entertainment Tonight
1981
National Lampoon's Christmas Vacation
1989
Bean
1997
I Know What You Did Last Summer
1997
A Dog's Journey
2019
Rings
2017
Roseanne
1988
The Norm Show
1999
Civil Wars
1991
LAX
2004
Bounce
2000
Hardball
1989
Suicide Kings
1997
American Dreamer
1990
The Opposite of Sex
1998
Happy Endings
2005
I'm Chevy Chase and You're Not
2025
The Cleanse
2018
CBGB
2013
Sudden Fury
1993
Boulevard of Broken Dreams
2007
Peep Show
Prancer
1989
Blind Faith
1990
Bookies
2003
Billy
1992
Murder Ordained
1987
A Night in the Life of Jimmy Reardon
1988
Table for Three
2009
Without Consent
1994
Playing Mona Lisa
2000
Must See TV: An All Star Tribute to James Burrows
2016
SciJinks
2018
Murder at My Door
1996
In Defense of a Married Man
1990
Unraveling the Mystery: A Big Bang Farewell
2019
Morgan's Ferry
2001
Chrystal
2004
Backfield in Motion
1991
The Little Dog Laughed
2020