Johnny Galecki

Profile

Johnny Galecki

Acting
Born 1975-04-30
1
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.

Filmography

59 credits across movies and TV

Bean
Movie

Bean

1997 · Stingo Wheelie

I Know What You Did Last Summer
Movie

I Know What You Did Last Summer

1997 · Max Neurick

National Lampoon's Christmas Vacation
Movie

National Lampoon's Christmas Vacation

1989 · Rusty Griswold

Hancock
Movie

Hancock

2008 · Jeremy

The Opposite of Sex
Movie

The Opposite of Sex

1998 · Jason Bock

Bookies
Movie

Bookies

2003 · Jude

A Night in the Life of Jimmy Reardon
Movie

A Night in the Life of Jimmy Reardon

1988 · Toby Reardon

In Time
Movie

In Time

2011 · Borel

Morgan's Ferry
Movie

Morgan's Ferry

2001 · Darcy

Playing Mona Lisa
Movie

Playing Mona Lisa

2000 · Arthur

CBGB
Movie

CBGB

2013 · Terry Ork

Murder at My Door
Movie

Murder at My Door

1996 · Teddy McNair

Vanilla Sky
Movie

Vanilla Sky

2001 · Peter Brown

Backfield in Motion
Movie

Backfield in Motion

1991 · Tim Seavers

Sudden Fury
Movie

Sudden Fury

1993 · Daniel Hannigan

The Cleanse
Movie

The Cleanse

2018 · Paul Berger

Bounce
Movie

Bounce

2000 · Seth

Rings
Movie

Rings

2017 · Gabriel Brown

Murder Ordained
Movie

Murder Ordained

1987 · Doug Rule

Must See TV: An All Star Tribute to James Burrows
Movie

Must See TV: An All Star Tribute to James Burrows

2016 · Self

Without Consent
Movie

Without Consent

1994 · Marty

Suicide Kings
Movie

Suicide Kings

1997 · Ira Reder

Prancer
Movie

Prancer

1989 · Billy Quinn

Happy Endings
Movie

Happy Endings

2005 · Miles (uncredited)

Chrystal
Movie

Chrystal

2004 · Barry

In Defense of a Married Man
Movie

In Defense of a Married Man

1990 · Eric

The Little Dog Laughed
Movie

The Little Dog Laughed

2020 · Alex

A Dog's Journey
Movie

A Dog's Journey

2019 · Henry Montgomery

Table for Three
Movie

Table for Three

2009 · Ted

Unraveling The Mystery: A Big Bang Farewell
Movie

Unraveling The Mystery: A Big Bang Farewell

2019 · Self - Host

I'm Chevy Chase and You're Not
Movie

I'm Chevy Chase and You're Not

2025 · Self

American Dreamer
TV

American Dreamer

1990 · Danny Nash

Batman Beyond
TV

Batman Beyond

1999 · Knux (voice)

The Big Bang Theory
TV

The Big Bang Theory

2007 · Leonard Hofstadter

American Dad!
TV

American Dad!

2005 · Arnie (voice)

Family Guy
TV

Family Guy

1999 · Leonard Hofstadter (voice)

Hope & Faith
TV

Hope & Faith

2003 · Jay

My Name Is Earl
TV

My Name Is Earl

2005 · Scott

Roseanne
TV

Roseanne

1988 · David Healy

Billy
TV

Billy

1992 · David MacGregor

LAX
TV

LAX

2004 · Leland Pressman

Blossom
TV

Blossom

1990 · Jason

Hardball
TV

Hardball

1989

Civil Wars
TV

Civil Wars

1991 · Greg Stolbach

Lip Sync Battle
TV

Lip Sync Battle

2015 · Self

The Late Late Show with Craig Ferguson
TV

The Late Late Show with Craig Ferguson

2005 · Self

Blind Faith
TV

Blind Faith

1990 · John Marshall

Boulevard of Broken Dreams
TV

Boulevard of Broken Dreams

2007 · Self (archive footage)

SciJinks
TV

SciJinks

2018 · Self - Host

The Conners
TV

The Conners

2018 · David Healy

Entertainment Tonight
TV

Entertainment Tonight

1981 · Self

Stars in the House
TV

Stars in the House

2020 · Self

Conan
TV

Conan

2010 · Self

The Norm Show
TV

The Norm Show

1999 · Dale Stackhouse

Entourage
TV

Entourage

2004 · Johnny Galecki

People's Choice Awards
TV

People's Choice Awards

1975 · Self - Presenter

Peep Show
TV

Peep Show

Mark

Conan
TV

Conan

2010 · Self - Guest

The Late Show with Stephen Colbert
TV

The Late Show with Stephen Colbert

2015 · Self - Guest