Born in Bree, Belgium — Apr 30 1975

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.
Browse acting and crew credits across movies and TV — filter and sort to find specific roles.

Leonard Hofstadter (voice)

Arnie (voice)

Leonard Hofstadter

Johnny Galecki

Scott

David Healy

Jay

Knux (voice)

Jason

Self - Presenter

Self

Self

David Healy

Jeremy

Borel


Leland Pressman

Greg Stolbach

Dale Stackhouse

Danny Nash

Peter Brown

Max Neurick

Stingo Wheelie

Rusty Griswold

Gabriel Brown

Henry Montgomery

Billy Quinn

Miles (uncredited)

Self - Host

David MacGregor

Jason Bock

Ira Reder
Self (archive footage)

Daniel Hannigan

Jude

Seth

Barry

Self

Terry Ork

John Marshall

Marty

Self

Arthur

Toby Reardon

Paul Berger

Darcy

Eric

Doug Rule

Ted

Teddy McNair

Tim Seavers

Self - Host

Alex
Mark