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
Bean
(1997)
Stingo Wheelie
Hancock
(2008)
Jeremy
A Dog's Journey
(2019)
Henry Montgomery
Vanilla Sky
(2001)
Peter Brown
National Lampoon's Christmas Vacation
(1989)
Russell 'Rusty' Griswold
I Know What You Did Last Summer
(1997)
Max Neurick
Suicide Kings
(1998)
Ira Reder
The Opposite of Sex
(1998)
Jason Bock
Prancer
(1989)
Billy Quinn
CBGB
(2013)
Terry Ork
The Cleanse
(2018)
Paul Berger
Bounce
(2000)
Seth
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
I Know What You Did Last Summer
(1997)
Max Neurick
Bean
(1997)
Stingo Wheelie
The Opposite of Sex
(1998)
Jason Bock
Suicide Kings
(1998)
Ira Reder
Morgan's Ferry
(1999)
Darcy
Bounce
(2000)
Seth
Playing Mona Lisa
(2000)
Arthur
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