
Johnny Galecki
Department: Acting
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

Bean
1997

I Know What You Did Last Summer
1997

National Lampoon's Christmas Vacation
1989

Hancock
2008

The Opposite of Sex
1998

Bookies
2003

A Night in the Life of Jimmy Reardon
1988

In Time
2011

Morgan's Ferry
2001

Playing Mona Lisa
2000

CBGB
2013

Murder at My Door
1996

Vanilla Sky
2001

Backfield in Motion
1991

Sudden Fury
1993

The Cleanse
2018

Bounce
2000

Rings
2017

Murder Ordained
1987

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

Without Consent
1994

Suicide Kings
1997

Prancer
1989

Happy Endings
2005

Chrystal
2004

In Defense of a Married Man
1990

The Little Dog Laughed
2020

A Dog's Journey
2019

Table for Three
2009

Unraveling The Mystery: A Big Bang Farewell
2019

I'm Chevy Chase and You're Not
2025

American Dreamer
1990

Batman Beyond
1999

The Big Bang Theory
2007

American Dad!
2005

Family Guy
1999

Hope & Faith
2003

My Name Is Earl
2005

Roseanne
1988

Billy
1992

LAX
2004

Blossom
1990

Hardball
1989

Civil Wars
1991

Lip Sync Battle
2015

The Late Late Show with Craig Ferguson
2005

Blind Faith
1990

Boulevard of Broken Dreams
2007

SciJinks
2018

The Conners
2018

Entertainment Tonight
1981

Stars in the House
2020

Conan
2010

The Norm Show
1999

Entourage
2004

People's Choice Awards
1975

Peep Show
2015

Conan
2010

The Late Show with Stephen Colbert
2015