Johnny Galecki

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 ForActing

BornApril 30, 1975 (51)

Place of BirthBree, Belgium

Movie

I'm Chevy Chase and You're Not

2025

Self

Movie

The Little Dog Laughed

2020

Alex

Stars in the House

2020

Self

Movie

Unraveling the Mystery: A Big Bang Farewell

2019

Self - Host

Movie

A Dog's Journey

2019

Henry Montgomery

The Conners

2018

David Healy

SciJinks

2018

Self - Host

Movie

The Cleanse

2018

Paul Berger

Movie

Rings

2017

Gabriel Brown

Movie

Must See TV: An All Star Tribute to James Burrows

2016

Self

The Late Show with Stephen Colbert

2015

Self - Guest

Lip Sync Battle

2015

Self

Movie

CBGB

2013

Terry Ork

Movie

In Time

2011

Borel

Conan

2010

Self

The Talk

2010

Self

Movie

Table for Three

2009

Ted

Movie

Hancock

2008

Jeremy

The Big Bang Theory

2007

Leonard Hofstadter

Boulevard of Broken Dreams

2007

Self (archive footage)

My Name Is Earl

2005

Scott

American Dad!

2005

Arnie (voice)

Movie

Happy Endings

2005

Miles (uncredited)

The Late Late Show with Craig Ferguson

2005

Self

LAX

2004

Leland Pressman

Entourage

2004

Johnny Galecki

Movie

Chrystal

2004

Barry

Hope & Faith

2003

Jay

The Ellen DeGeneres Show

2003

Self

Movie

Bookies

2003

Jude

Movie

Vanilla Sky

2001

Peter Brown

Movie

Morgan's Ferry

2001

Darcy

Movie

Bounce

2000

Seth

Movie

Playing Mona Lisa

2000

Arthur

The Norm Show

1999

Dale Stackhouse

Family Guy

1999

Leonard Hofstadter (voice)

Batman Beyond

1999

Knux (voice)

Movie

The Opposite of Sex

1998

Jason Bock

Movie

I Know What You Did Last Summer

1997

Max Neurick

Movie

Suicide Kings

1997

Ira Reder

Movie

Bean

1997

Stingo Wheelie

Movie

Murder at My Door

1996

Teddy McNair

Movie

Without Consent

1994

Marty

Movie

Sudden Fury

1993

Daniel Hannigan

Billy

1992

David MacGregor

Civil Wars

1991

Greg Stolbach

Movie

Backfield in Motion

1991

Tim Seavers

Movie

In Defense of a Married Man

1990

Eric

American Dreamer

1990

Danny Nash

Blossom

1990

Jason

Blind Faith

1990

John Marshall

Movie

National Lampoon's Christmas Vacation

1989

Rusty Griswold

Movie

Prancer

1989

Billy Quinn

Hardball

1989

Roseanne

1988

David Healy

Movie

A Night in the Life of Jimmy Reardon

1988

Toby Reardon

Movie

Murder Ordained

1987

Doug Rule

Entertainment Tonight

1981

Self

People's Choice Awards

1975

Self - Presenter

Peep Show

Mark