Johnny Galecki — Movies, TV Shows & Where to Watch | Watchly

Johnny Galecki

Johnny Galecki

ActingBorn: April 30, 1975in 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.

I'm Chevy Chase and You're Not

HBO Max Amazon Channel

I'm Chevy Chase and You're Not

2025Documentary

as Self

The Little Dog Laughed

The Little Dog Laughed

as Alex

Stars in the House

Stars in the House

as Self

Unraveling the Mystery: A Big Bang Farewell

Unraveling the Mystery: A Big Bang Farewell

2019Documentary

as Self - Host

A Dog's Journey

A Dog's Journey

as Henry Montgomery

The Conners

The Conners

as David Healy

SciJinks

SciJinks

as Self - Host

The Cleanse

The Cleanse

as Paul Berger

Rings

Rings

as Gabriel Brown

Must See TV: An All Star Tribute to James Burrows

Must See TV: An All Star Tribute to James Burrows

as Self

The Late Show with Stephen Colbert

Paramount Plus Premium

Paramount Plus Essential

The Late Show with Stephen Colbert

as Self - Guest

Lip Sync Battle

Lip Sync Battle

as Self

CBGB

CBGB

as Terry Ork

In Time

In Time

as Borel

Conan

Conan

as Self

Conan

Conan

as Self - Guest

The Talk

The Talk

as Self

Table for Three

Table for Three

as Ted

Hancock

Hancock

as Jeremy

The Big Bang Theory

The Big Bang Theory

as Leonard Hofstadter

Boulevard of Broken Dreams

2007Documentary

as Self (archive footage)

My Name Is Earl

My Name Is Earl

as Scott

American Dad!

American Dad!

as Arnie (voice)

Happy Endings

Starz Apple TV Channel

Happy Endings

as Miles (uncredited)

The Late Late Show with Craig Ferguson

The Late Late Show with Craig Ferguson

as Self

LAX

LAX

as Leland Pressman

Entourage

Entourage

as Johnny Galecki

Chrystal

Chrystal

as Barry

Hope & Faith

Hope & Faith

as Jay

The Ellen DeGeneres Show

The Ellen DeGeneres Show

as Self

Bookies

Bookies

as Jude

Vanilla Sky

Vanilla Sky

as Peter Brown

Morgan's Ferry

Morgan's Ferry

as Darcy

Bounce

Bounce

as Seth

Playing Mona Lisa

Playing Mona Lisa

as Arthur

The Norm Show

The Norm Show

as Dale Stackhouse

Family Guy

Family Guy

as Leonard Hofstadter (voice)

Batman Beyond

Batman Beyond

as Knux (voice)

The Opposite of Sex

The Opposite of Sex

as Jason Bock

I Know What You Did Last Summer

I Know What You Did Last Summer

as Max Neurick

Suicide Kings

Suicide Kings

as Ira Reder

Bean

Bean

as Stingo Wheelie

Murder at My Door

Murder at My Door

as Teddy McNair

Without Consent

Without Consent

as Marty

Sudden Fury

Sudden Fury

as Daniel Hannigan

Billy

Billy

as David MacGregor

Civil Wars

Civil Wars

as Greg Stolbach

Backfield in Motion

Backfield in Motion

as Tim Seavers

In Defense of a Married Man

In Defense of a Married Man

as Eric

American Dreamer

American Dreamer

as Danny Nash

Blossom

Blossom

as Jason

Blind Faith

Blind Faith

as John Marshall

National Lampoon's Christmas Vacation

National Lampoon's Christmas Vacation

as Rusty Griswold

Prancer

Prancer

as Billy Quinn

Hardball

Hardball

as Unknown

Roseanne

Roseanne

as David Healy

A Night in the Life of Jimmy Reardon

A Night in the Life of Jimmy Reardon

as Toby Reardon

Murder Ordained

Murder Ordained

as Doug Rule

Entertainment Tonight

Entertainment Tonight

as Self

People's Choice Awards

People's Choice Awards

as Self - Presenter

Peep Show

as Mark