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.
2020
as Alex
2020
as Self
2019
as Henry Montgomery
2018
as David Healy
2018
as Himself - Host
2018
as Paul Berger
2017
as Gabriel Brown
2016
as Self
2015
as Self
2013
as Terry Ork
2011
as Borel
2009
as Ted
2008
as Jeremy
2007
as Leonard Hofstadter
2007
as (archive footage)
2005
as Scott
2005
as Arnie (voice)
2005
as Miles (uncredited)
2004
as Leland Pressman
2004
as Barry
2003
as Jay
2003
as Jude
2001
as Peter Brown
2001
as Darcy
2000
as Seth
2000
as Arthur
1999
as Leonard Hofstadter (voice)
1999
as Knux (voice)
1998
as Jason Bock
1997
as Max Neurick
1997
as Ira Reder
1997
as Stingo Wheelie
1996
as Teddy McNair
1994
as Marty
1993
as Daniel Hannigan
1992
as David MacGregor
1991
as Greg Stolbach
1991
as Tim Seavers
1990
as Eric
1990
as Danny Nash
1990
as Jason
1990
as John Marshall
1989
as Russell 'Rusty' Griswold
1989
as Billy Quinn
1989
1988
as David Healy
1988
as Toby Reardon
1987
as Doug Rule