Person
Johnny Galecki
Acting · Born 1975-04-30 · Bree, Belgium
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.
Known for
Family Guy
Leonard Hofstadter (voice)
American Dad!
Arnie (voice)
The Late Show with Stephen Colbert
Self - Guest
Conan
Self
The Talk
Self
The Late Late Show with Craig Ferguson
Self
The Big Bang Theory
Leonard Hofstadter
Entourage
Johnny Galecki
The Ellen DeGeneres Show
Self
My Name Is Earl
Scott
Filmography
- 2025I'm Chevy Chase and You're NotSelf
- 2020The Little Dog LaughedAlex
- 2020Stars in the HouseSelf
- 2019Unraveling the Mystery: A Big Bang FarewellSelf - Host
- 2019A Dog's JourneyHenry Montgomery
- 2018The ConnersDavid Healy
- 2018SciJinksSelf - Host
- 2018The CleansePaul Berger
- 2017RingsGabriel Brown
- 2016Must See TV: An All Star Tribute to James BurrowsSelf
- 2015The Late Show with Stephen ColbertSelf - Guest
- 2015Lip Sync BattleSelf
- 2013CBGBTerry Ork
- 2011In TimeBorel
- 2010ConanSelf
- 2010The TalkSelf
- 2009Table for ThreeTed
- 2008HancockJeremy
- 2007The Big Bang TheoryLeonard Hofstadter
- 2007Boulevard of Broken DreamsSelf (archive footage)
- 2005My Name Is EarlScott
- 2005American Dad!Arnie (voice)
- 2005Happy EndingsMiles (uncredited)
- 2005The Late Late Show with Craig FergusonSelf
- 2004LAXLeland Pressman
- 2004EntourageJohnny Galecki
- 2004ChrystalBarry
- 2003Hope & FaithJay
- 2003The Ellen DeGeneres ShowSelf
- 2003BookiesJude
- 2001Vanilla SkyPeter Brown
- 2001Morgan's FerryDarcy
- 2000BounceSeth
- 2000Playing Mona LisaArthur
- 1999The Norm ShowDale Stackhouse
- 1999Family GuyLeonard Hofstadter (voice)
- 1999Batman BeyondKnux (voice)
- 1998The Opposite of SexJason Bock
- 1997I Know What You Did Last SummerMax Neurick
- 1997Suicide KingsIra Reder
- 1997BeanStingo Wheelie
- 1996Murder at My DoorTeddy McNair
- 1994Without ConsentMarty
- 1993Sudden FuryDaniel Hannigan
- 1992BillyDavid MacGregor
- 1991Civil WarsGreg Stolbach
- 1991Backfield in MotionTim Seavers
- 1990In Defense of a Married ManEric
- 1990American DreamerDanny Nash
- 1990BlossomJason
- 1990Blind FaithJohn Marshall
- 1989National Lampoon's Christmas VacationRusty Griswold
- 1989PrancerBilly Quinn
- 1989Hardball
- 1988RoseanneDavid Healy
- 1988A Night in the Life of Jimmy ReardonToby Reardon
- 1987Murder OrdainedDoug Rule
- 1981Entertainment TonightSelf
- 1975People's Choice AwardsSelf - Presenter
- —Peep ShowMark
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