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
Rings
(2017)
Gabriel Brown
In Time
(2011)
Borel
A Dog's Journey
(2019)
Henry Montgomery
National Lampoon's Christmas Vacation
(1989)
Russell 'Rusty' Griswold
Hancock
(2008)
Jeremy
I Know What You Did Last Summer
(1997)
Max Neurick
Vanilla Sky
(2001)
Peter Brown
Bounce
(2000)
Seth
Bean
(1997)
Stingo Wheelie
CBGB
(2013)
Terry Ork
Suicide Kings
(1998)
Ira Reder
The Opposite of Sex
(1998)
Jason Bock
The Cleanse
(2018)
Paul Berger
Prancer
(1989)
Billy Quinn
Table for Three
(2009)
Ted
A Night in the Life of Jimmy Reardon
(1988)
Toby Reardon
Full Filmography
Acting
Murder Ordained
(1987)
Doug Rule
A Night in the Life of Jimmy Reardon
(1988)
Toby Reardon
National Lampoon's Christmas Vacation
(1989)
Russell 'Rusty' Griswold
Prancer
(1989)
Billy Quinn
In Defense of a Married Man
(1990)
Eric
Backfield in Motion
(1991)
Tim Seavers
Sudden Fury
(1993)
Daniel Hannigan
Without Consent
(1994)
Marty
Murder at My Door
(1996)
Teddy McNair
Bean
(1997)
Stingo Wheelie
I Know What You Did Last Summer
(1997)
Max Neurick
The Opposite of Sex
(1998)
Jason Bock
Suicide Kings
(1998)
Ira Reder
Morgan's Ferry
(1999)
Darcy
Playing Mona Lisa
(2000)
Arthur
Bounce
(2000)
Seth
Vanilla Sky
(2001)
Peter Brown
Bookies
(2003)
Jude
Chrystal
(2004)
Barry
Happy Endings
(2005)
Miles (uncredited)
Hancock
(2008)
Jeremy
Table for Three
(2009)
Ted
In Time
(2011)
Borel
CBGB
(2013)
Terry Ork
Must See TV: An All Star Tribute to James Burrows
(2016)
Self
Rings
(2017)
Gabriel Brown
The Cleanse
(2018)
Paul Berger
A Dog's Journey
(2019)
Henry Montgomery
The Little Dog Laughed
(2020)
Alex
Production