Johnny Galecki
ActingTotal Credits
59
Acting
59
First Credit
1975
Latest Credit
2025
Batman Beyond
Knux (voice)
1999
A Dog's Journey
Henry Montgomery
2019
The Big Bang Theory
Leonard Hofstadter
2007
My Name Is Earl
Scott
2005
Family Guy
Leonard Hofstadter (voice)
1999
Entourage
Johnny Galecki
2004
National Lampoon's Christmas Vacation
Rusty Griswold
1989
Without Consent
Marty
1994
The Norm Show
Dale Stackhouse
1999
The Conners
David Healy
2018
American Dad!
Arnie (voice)
2005
In Time
Borel
2011
I'm Chevy Chase and You're Not
Self
2025
Vanilla Sky
Peter Brown
2001
Roseanne
David Healy
1988
Suicide Kings
Ira Reder
1997
Bean
Stingo Wheelie
1997
Lip Sync Battle
Self
2015
Hancock
Jeremy
2008
Bookies
Jude
2003
CBGB
Terry Ork
2013
The Opposite of Sex
Jason Bock
1998
Blossom
Jason
1990
I Know What You Did Last Summer
Max Neurick
1997
Prancer
Billy Quinn
1989
Playing Mona Lisa
Arthur
2000
Bounce
Seth
2000
Chrystal
Barry
2004
Happy Endings
Miles (uncredited)
2005
Hope & Faith
Jay
2003
The Cleanse
Paul Berger · Producer
2018
Rings
Gabriel Brown
2017
A Night in the Life of Jimmy Reardon
Toby Reardon
1988
Sudden Fury
Daniel Hannigan
1993
Table for Three
Ted
2009
In Defense of a Married Man
Eric
1990
Must See TV: An All Star Tribute to James Burrows
Self
2016
People's Choice Awards
Self - Presenter
1975
LAX
Leland Pressman
2004
Hardball
Actor
1989
Billy
David MacGregor
1992
Blind Faith
John Marshall
1990
Morgan's Ferry
Darcy
2001
Backfield in Motion
Tim Seavers
1991
American Dreamer
Danny Nash
1990
Murder Ordained
Doug Rule
1987
Civil Wars
Greg Stolbach
1991
Murder at My Door
Teddy McNair
1996
Boulevard of Broken Dreams
Self (archive footage)
2007
TVStars in the House
Self
2020
Peep Show
Mark
TVSciJinks
Self - Host · Executive Producer
2018
MovieThe Little Dog Laughed
Alex
2020
MovieUnraveling the Mystery: A Big Bang Farewell
Self - Host
2019