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.
Acting credits 18 titles
I'm Chevy Chase and You're Not
as Self
Film
2025
6.8
A Dog's Journey
as Henry Montgomery
Film
2019
8.0
The Cleanse
as Paul Berger
Film
2018
5.1
Rings
as Gabriel Brown
Film
2017
5.0
Must See TV: An All Star Tribute to James Burrows
as Self
Film
2016
4.0
In Time
as Borel
Film
2011
7.0
Hancock
as Jeremy
Film
2008
6.4
The Big Bang Theory
as Leonard Hofstadter
Series
2007–2019
7.9
Bookies
as Jude
Film
2003
6.3
Vanilla Sky
as Peter Brown
Film
2001
6.8
Bounce
as Seth
Film
2000
5.8
The Opposite of Sex
as Jason Bock
Film
1998
6.2
I Know What You Did Last Summer
as Max Neurick
Film
1997
6.0
Billy
as David MacGregor
Series
1992
7.0
American Dreamer
as Danny Nash
Series
1990–1991
5.3
Blind Faith
as John Marshall
Series
1990
6.4
National Lampoon's Christmas Vacation
as Rusty Griswold
Film
1989
7.2
Prancer
as Billy Quinn
Film
1989
6.2
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Conocido por
7.9
Series
The Big Bang Theory
Leonard Hofstadter
2007–2019
7.0
Film
In Time
Borel
2011
6.8
Film
Vanilla Sky
Peter Brown
2001
8.0
Film
A Dog's Journey
Henry Montgomery
2019
7.2
Film
National Lampoon's Christmas Vacation
Rusty Griswold
1989
6.0
Film
I Know What You Did Last Summer
Max Neurick
1997
6.4
Film
Hancock
Jeremy
2008
6.3
Film
Bookies
Jude
2003
6.2
Film
Prancer
Billy Quinn
1989
6.2
Film
The Opposite of Sex
Jason Bock
1998
5.0
Film
Rings
Gabriel Brown
2017
5.3
Series
American Dreamer
Danny Nash
1990–1991
4.0
Film
Must See TV: An All Star Tribute to James Burrows
Self
2016
5.8
Film
Bounce
Seth
2000
7.0
Series
Billy
David MacGregor
1992
6.8
Film
I'm Chevy Chase and You're Not
Self
2025
6.4
Series
Blind Faith
John Marshall
1990
5.1
Film
The Cleanse
Paul Berger
2018