Johnny Galecki movies and series

April 30, 1975 (age 51) Bree, Belgium
IMDb

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.

His titles like The Big Bang Theory, In Time, and Hancock - his biggest roles first. Last updated: October 3, 2026

Watched 0/32
6.46 /10
  • 1
    1
    The Big Bang Theory
    2007–2019 by Chuck Lorre
    Lead role as Leonard Hofstadter
    Lead role as Leonard Hofstadter
    7.35 Excellent-- 12.8k ratings
  • 2
    2
    In Time
    2011October 2011 by Andrew Niccol
    Supporting as Borel
    Supporting as Borel
    6.58 Good 12.5k ratings
  • 3
    3
    Hancock
    2008July 2008 by Peter Berg
    Minor role as Jeremy
    Minor role as Jeremy
    5.89 Okay++ 10.5k ratings
  • 4
    4
    Rings
    2017February 2017 by F. Javier Gutiérrez
    Starring as Gabriel Brown
    Starring as Gabriel Brown
    4.61 Mediocre+ 2,656 ratings
  • 5
    5
    National Lampoon's Christmas Vacation
    1989November 1989 by Jeremiah S. Chechik
    Supporting as Rusty Griswold
    Supporting as Rusty Griswold
    6.75 Good 2,809 ratings
  • 6
    6
    I Know What You Did Last Summer
    1997October 1997 by Jim Gillespie
    Supporting as Max Neurick
    Supporting as Max Neurick
    5.54 Okay 3,370 ratings
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  • 7
    7
    Vanilla Sky
    2001December 2001 by Cameron Crowe
    Minor role as Peter Brown
    Minor role as Peter Brown
    6.39 Good- 4,868 ratings
  • 8
    8
    A Dog's Journey
    2019May 2019 by Gail Mancuso
    Minor role as Henry Montgomery
    Minor role as Henry Montgomery
    7.53 Excellent- 1,647 ratings
  • 9
    9
    Bounce
    2000November 2000 by Don Roos
    Supporting as Seth
    Supporting as Seth
    5.58 Okay 424 ratings
  • 10
    10
    Suicide Kings
    1997September 1997 by Peter O'Fallon
    Supporting as Ira Reder
    Supporting as Ira Reder
    6.11 Okay++ 339 ratings
  • 11
    11
    The Cleanse
    2018May 2018 by Bobby Miller
    Lead role as Paul Berger
    Lead role as Paul Berger
    5.58 Okay 105 ratings
  • 12
    12
    CBGB
    2013October 2013 by Randall Miller
    Supporting as Terry Ork
    Supporting as Terry Ork
    5.99 Okay++ 207 ratings
  • 13
    13
    The Opposite of Sex
    1998May 1998 by Don Roos
    Supporting as Jason Bock
    Supporting as Jason Bock
    5.88 Okay+ 224 ratings
  • 14
    14
    Prancer
    1989November 1989 by John D. Hancock
    Minor role as Billy Quinn
    Minor role as Billy Quinn
    5.93 Okay++ 109 ratings
  • 15
    15
    Bookies
    2003January 2003 by Mark Illsley
    Starring as Jude
    Starring as Jude
    6.04 Okay++ <100 ratings
  • 16
    16
    Table for Three
    2009June 2009 by Michael Samonek
    Supporting as Ted
    Supporting as Ted
    5.64 Okay <100 ratings
  • 17
    17
    A Night in the Life of Jimmy Reardon
    1988February 1988 by William Richert
    Minor role as Toby Reardon
    Minor role as Toby Reardon
    5.70 Okay+ <100 ratings
  • 18
    18
    Sudden Fury
    1993November 1993 by Craig R. Baxley
    Starring as Daniel Hannigan
    Starring as Daniel Hannigan
    5.99 Okay++ <100 ratings
  • 19
    19
    Chrystal
    2004February 2004 by Ray McKinnon
    Supporting as Barry
    Supporting as Barry
    5.98 Okay++ <100 ratings
  • 20
    20
    I'm Chevy Chase and You're Not
    2025December 2025 by Marina Zenovich
    Minor role as Self
    Minor role as Self
    6.07 Okay++ <100 ratings
  • 21
    21
    In Defense of a Married Man
    1990October 1990 by Joel Oliansky
    Supporting as Eric
    Supporting as Eric
    5.96 Okay++ <100 ratings
  • 22
    22
    Playing Mona Lisa
    2000May 2000 by Matthew Huffman
    Supporting as Arthur
    Supporting as Arthur
    6.03 Okay++ <100 ratings
  • 23
    23
    Morgan's Ferry
    2001November 2001 by Sam Pillsbury
    Starring as Darcy
    Starring as Darcy
    Needs more reviews
  • 24
    24
    Without Consent
    1994October 1994 by Robert Iscove
    Supporting as Marty
    Supporting as Marty
    6.10 Okay++ <100 ratings
  • 25
    25
    Must See TV: An All Star Tribute to James Burrows
    2016February 2016 by Ryan Polito
    Supporting as Self
    Supporting as Self
    5.93 Okay++ <100 ratings
  • 26
    26
    Murder at My Door
    1996October 1996 by Eric Till
    Starring as Teddy McNair
    Starring as Teddy McNair
    Needs more reviews
  • 27
    27
    Backfield in Motion
    1991November 1991 by Richard Michaels
    Starring as Tim Seavers
    Starring as Tim Seavers
    Needs more reviews
  • 28
    28
    Billy
    1992 by Rich Eustis
    Lead role as David MacGregor
    Lead role as David MacGregor
    Needs more reviews
  • 29
    29
    Blind Faith
    1990 by Paul Wendkos
    Supporting as John Marshall
    Supporting as John Marshall
    Needs more reviews
  • 30
    30
    American Dreamer
    1990–1991 by Susan Seeger
    Supporting as Danny Nash
    Supporting as Danny Nash
    Needs more reviews
  • 31
    31
    SciJinks
    Airing since 2018
    Lead role as Self - Host
    Lead role as Self - Host
    Needs more reviews
  • 32
    32
    Murder Ordained
    1987May 1987 by Mike Robe
    Minor role as Doug Rule
    Minor role as Doug Rule
    Needs more reviews
Co-starring with:
Chevy Chase 2 titles
Jim Parsons 2 titles
Kaley Cuoco 2 titles
Anna Friel 1 title
Neil Patrick Harris 1 title
Nick Stahl 1 title
Kyle Gallner 2 titles
Simon Helberg 2 titles
Beverly D'Angelo 2 titles
Grace Zabriskie 2 titles
Anjelica Huston 1 title
Billy Connolly 1 title
Billy Zane 1 title
Matilda Lutz 1 title
Jesse Bradford 2 titles
Alan Rickman 1 title
Alicia Witt 1 title
Ben Affleck 1 title
Henry Rollins 1 title
Sophia Bush 1 title
Rachael Leigh Cook 1 title
Tom Arnold 1 title
Melissa Rauch 1 title
John Diehl 1 title