
Bree, Belgium
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.

as Arnie (voice)

as Leonard Hofstadter (voice)
1999

as Self - Guest
2015

as Arnie (voice)
2005

as Self
2010

as Leonard Hofstadter
2007

as Self
2005

as Johnny Galecki
2004

as Self
2003

as Knux (voice)
1999

as Scott
2005

as Self - Presenter
1975

as David Healy
2018
as Self - Host
2019

as Self
2025

as Alex
2020

as Self - Host
2019

as Henry Montgomery
2019

as Paul Berger
2018

as Gabriel Brown
2017

as Self
2016

as Terry Ork
2013

as Borel
2011

as Ted
2009

as Jeremy
2008

as Miles (uncredited)
2005

as Barry
2004

as Jude
2003

as Peter Brown
2001

as Darcy
2001

as Seth
2000

as Arthur
2000

as Jason Bock
1998

as Max Neurick
1997

as Ira Reder
1997

as Stingo Wheelie
1997

as Teddy McNair
1996

as Marty
1994
as Arnie (voice)
1 ep.

as Leonard Hofstadter (voice)
1 episodes

as Self - Guest
1 episodes

as Arnie (voice)
1 episodes

as Self
1 episodes

as Leonard Hofstadter
279 episodes

as Self
1 episodes

as Johnny Galecki
3 episodes

as Self
1 episodes

as Knux (voice)
1 episodes

as Scott
1 episodes

as Self - Presenter
1 episodes

as David Healy
4 episodes

as Jason
1 episodes

as Self
1 episodes

as Self
1 episodes

as Jay
3 episodes

as Self
2 episodes

as Dale Stackhouse
2 episodes

as Leland Pressman
1 episodes

as David Healy
92 episodes

as Greg Stolbach
1 episodes

1 episodes

as Danny Nash
17 episodes

as David MacGregor
13 episodes
Producer