Johnny Galecki
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.
Filmography (59 titles)
6.8MovieI'm Chevy Chase and You're Not
Self · 2025
MovieThe Little Dog Laughed
Alex · 2020
ShowStars in the House
Self · 2020
MovieUnraveling the Mystery: A Big Bang Farewell
Self - Host · 2019
8.1MovieA Dog's Journey
Henry Montgomery · 2019
7.0ShowThe Conners
David Healy · 2018
ShowSciJinks
Self - Host · 2018
5.1MovieThe Cleanse
Paul Berger · 2018
5.0MovieRings
Gabriel Brown · 2017
4.0MovieMust See TV: An All Star Tribute to James Burrows
Self · 2016
6.1ShowThe Late Show with Stephen Colbert
Self - Guest · 2015
6.4ShowLip Sync Battle
Self · 2015
6.3MovieCBGB
Terry Ork · 2013
7.0MovieIn Time
Borel · 2011
7.2ShowConan
Self · 2010
3.0ShowThe Talk
Self · 2010
4.6MovieTable for Three
Ted · 2009
6.4MovieHancock
Jeremy · 2008
7.9ShowThe Big Bang Theory
Leonard Hofstadter · 2007
Boulevard of Broken Dreams
Self (archive footage) · 2007
7.6ShowMy Name Is Earl
Scott · 2005
7.0ShowAmerican Dad!
Arnie (voice) · 2005
5.6MovieHappy Endings
Miles (uncredited) · 2005
6.8ShowThe Late Late Show with Craig Ferguson
Self · 2005
7.3ShowLAX
Leland Pressman · 2004
7.4ShowEntourage
Johnny Galecki · 2004
5.8MovieChrystal
Barry · 2004
5.4ShowHope & Faith
Jay · 2003
5.5ShowThe Ellen DeGeneres Show
Self · 2003
6.4MovieBookies
Jude · 2003