Johnny Galecki

Apr 30, 1975 (50 years old) in 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.

Known For

poster

Family Guy

Leonard Hofstadter (voice)

poster

American Dad!

Arnie (voice)

poster

The Big Bang Theory

Leonard Hofstadter

poster

Entourage

Johnny Galecki

poster

Hope & Faith

Jay

poster

My Name Is Earl

Scott

poster

Blossom

Jason

poster

Batman Beyond

Knux (voice)

poster

The Conners

David Healy

poster

Stars in the House

Self

Credits

I'm Chevy Chase and You're Not 2025

Self

★ 7.1
The Little Dog Laughed 2020

Alex

★ NR
Stars in the House 2020

Self

★ NR
Unraveling The Mystery: A Big Bang Farewell 2019

Self - Host

★ NR
A Dog's Journey 2019

Henry Montgomery

★ 8.1
The Conners 2018

David Healy

★ 7.1
SciJinks 2018

Self - Host

★ NR
The Cleanse 2018

Paul Berger

★ 5.1
Rings 2017

Gabriel Brown

★ 5
Must See TV: An All Star Tribute to James Burrows 2016

Self

★ 4.1
Peep Show 2015

Mark

★ NR
Lip Sync Battle 2015

Self

★ 6.4
CBGB 2013

Terry Ork

★ 6.3
In Time 2011

Borel

★ 7
Table for Three 2009

Ted

★ 4.7
Hancock 2008

Jeremy

★ 6.4
The Big Bang Theory 2007

Leonard Hofstadter

★ 7.9
Boulevard of Broken Dreams 2007

Self (archive footage)

★ 3
My Name Is Earl 2005

Scott

★ 7.7
American Dad! 2005

Arnie (voice)

★ 7
Happy Endings 2005

Miles (uncredited)

★ 5.6
LAX 2004

Leland Pressman

★ 7.1
Entourage 2004

Johnny Galecki

★ 7.4
Chrystal 2004

Barry

★ 5.7
Hope & Faith 2003

Jay

★ 5.3
Bookies 2003

Jude

★ 6.3
Vanilla Sky 2001

Peter Brown

★ 6.8
Morgan's Ferry 2001

Darcy

★ 5.9
Bounce 2000

Seth

★ 5.8
Playing Mona Lisa 2000

Arthur

★ 5.7
The Norm Show 1999

Dale Stackhouse

★ 6.8
Family Guy 1999

Leonard Hofstadter (voice)

★ 7.4
Batman Beyond 1999

Knux (voice)

★ 8.2
The Opposite of Sex 1998

Jason Bock

★ 6.2
I Know What You Did Last Summer 1997

Max Neurick

★ 6
Suicide Kings 1997

Ira Reder

★ 6.6
Bean 1997

Stingo Wheelie

★ 6.5
Murder at My Door 1996

Teddy McNair

★ 2.4
Without Consent 1994

Marty

★ 6.9
Sudden Fury 1993

Daniel Hannigan

★ 4.3
Billy 1992

David MacGregor

★ 6
Civil Wars 1991

Greg Stolbach

★ 3.3
Backfield in Motion 1991

Tim Seavers

★ 4.4
In Defense of a Married Man 1990

Eric

★ 4.5
American Dreamer 1990

Danny Nash

★ 4.5
Blossom 1990

Jason

★ 6.1
Blind Faith 1990

John Marshall

★ 5.5
National Lampoon's Christmas Vacation 1989

Rusty Griswold

★ 7.2
Prancer 1989

Billy Quinn

★ 6
Hardball 1989

★ 7
Roseanne 1988

David Healy

★ 6.8
A Night in the Life of Jimmy Reardon 1988

Toby Reardon

★ 5
Murder Ordained 1987

Doug Rule

★ 5
People's Choice Awards 1975

Self - Presenter

★ 9.2

Images