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Acting

Johnny Galecki

Acting · Born 1975-04-30 · 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.

Credits · 58

I'm Chevy Chase and You're Not

Stars in the House

A Dog's Journey

2019 · Henry Montgomery

2018 · David Healy

2018 · Self - Host

2018 · Paul Berger

2017 · Gabriel Brown

Must See TV: An All Star Tribute to James Burrows

The Late Show with Stephen Colbert

2015 · Self - Guest

Lip Sync Battle

2013 · Terry Ork

Table for Three

The Big Bang Theory

2007 · Leonard Hofstadter

Boulevard of Broken Dreams

Boulevard of Broken Dreams

2007 · Self (archive footage)

My Name Is Earl

2005 · Arnie (voice)

2005 · Miles (uncredited)

The Late Late Show with Craig Ferguson

2004 · Leland Pressman

2004 · Johnny Galecki

The Ellen DeGeneres Show

2001 · Peter Brown

Playing Mona Lisa

1999 · Dale Stackhouse

1999 · Leonard Hofstadter (voice)

1999 · Knux (voice)

The Opposite of Sex

1998 · Jason Bock

I Know What You Did Last Summer

1997 · Max Neurick

1997 · Ira Reder

1997 · Stingo Wheelie

Murder at My Door

1996 · Teddy McNair

Without Consent

1993 · Daniel Hannigan

1992 · David MacGregor

1991 · Greg Stolbach

Backfield in Motion

1991 · Tim Seavers

In Defense of a Married Man

American Dreamer

1990 · Danny Nash

1990 · John Marshall

National Lampoon's Christmas Vacation

1989 · Rusty Griswold

1989 · Billy Quinn

1988 · David Healy

A Night in the Life of Jimmy Reardon

1988 · Toby Reardon

Murder Ordained

1987 · Doug Rule

Entertainment Tonight

People's Choice Awards

1975 · Self - Presenter

Johnny Galecki · MediaMark