Johnny Galecki
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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
Credits
In Time (2011)
as Borel
A Dog's Journey (2019)
as Henry Montgomery
Hancock (2008)
as Jeremy
National Lampoon's Christmas Vacation (1989)
as Rusty Griswold
I Know What You Did Last Summer (1997)
as Max Neurick
Vanilla Sky (2001)
as Peter Brown
Bean (1997)
as Stingo Wheelie
Rings (2017)
as Gabriel Brown
Bookies (2003)
as Jude
I'm Chevy Chase and You're Not (2025)
as Self
Prancer (1989)
as Billy Quinn
The Opposite of Sex (1998)
as Jason Bock
Happy Endings (2005)
as Miles (uncredited)
Sudden Fury (1993)
as Daniel Hannigan
Bounce (2000)
as Seth
Playing Mona Lisa (2000)
as Arthur
A Night in the Life of Jimmy Reardon (1988)
as Toby Reardon
Suicide Kings (1997)
as Ira Reder
Morgan's Ferry (2001)
as Darcy
Table for Three (2009)
as Ted
Must See TV: An All Star Tribute to James Burrows (2016)
as Self
CBGB (2013)
as Terry Ork
In Defense of a Married Man (1990)
as Eric
The Cleanse (2018)
as Paul Berger
Without Consent (1994)
as Marty
Unraveling the Mystery: A Big Bang Farewell (2019)
as Self - Host
Backfield in Motion (1991)
as Tim Seavers
Murder Ordained (1987)
as Doug Rule
Chrystal (2004)
as Barry
Murder at My Door (1996)
as Teddy McNair
The Little Dog Laughed (2020)
as Alex