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Acting
April 30, 1975
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.

Alex
2020

Self
2020

Self - Host
2019

Henry Montgomery
2019

David Healy
2018

Himself - Host
2018

Paul Berger
2018

Gabriel Brown
2017

Self
2016

Self
2015

as Alex

as Self

as Self - Host

as Henry Montgomery

as David Healy

as Himself - Host

as Paul Berger

as Gabriel Brown

as Self

as Self

as Terry Ork

as Borel

as Self

as Ted

as Jeremy

as Leonard Hofstadter
as Self (archive footage)

as Scott

as Arnie (voice)

as Miles (uncredited)

as Self

as Leland Pressman

as Johnny Galecki

as Barry

as Jay

as Jude

as Peter Brown

as Darcy

as Seth

as Arthur

as Dale Stackhouse

as Leonard Hofstadter (voice)

as Knux (voice)

as Jason Bock

as Max Neurick

as Ira Reder

as Stingo Wheelie

as Teddy McNair

as Marty

as Daniel Hannigan

as David MacGregor

as Greg Stolbach

as Tim Seavers

as Eric

as Danny Nash

as Jason

as John Marshall

as Rusty Griswold

as Billy Quinn


as David Healy

as Toby Reardon

as Doug Rule

as Self