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Johnny Galecki, a Belgian-born American actor, navigates the sitcom landscape with a blend of charm and intelligence, most memorably as the lovelorn David Healy in the brash world of Roseanne and the socially awkward Leonard Hofstadter in the cerebral comedy The Big Bang Theory. His portrayal of Rusty Griswold in National Lampoon's Christmas Vacation adds a layer of comedic depth, showcasing his range beyond the small screen.
The roles that explain the career.
27 credits across 1 departments.
| Year | Title | Role | Type |
|---|---|---|---|
| 2025 | I'm Chevy Chase and You're Not | Self | Film |
| 2019 | A Dog's Journey | Henry Montgomery | Film |
| 2017 | Rings | Gabriel Brown | Film |
| 2013 | CBGB | Terry Ork | Film |
| 2011 | In Time | Borel | Film |
| 2009 | Table for Three | Ted | Film |
| 2008 | Hancock | Jeremy | Film |
| 2007 | The Big Bang Theory | Leonard Hofstadter | TV |
| 2004 | Chrystal | Barry | Film |
| 2003 | Bookies | Jude | Film |
| 2001 | Morgan's Ferry | Darcy | Film |
| 2001 | Vanilla Sky | Peter Brown | Film |
| 2000 | Playing Mona Lisa | Arthur | Film |
| 2000 | Bounce | Seth | Film |
| 1998 | The Opposite of Sex | Jason Bock | Film |
| 1997 | Suicide Kings | Ira Reder | Film |
| 1997 | Bean | Stingo Wheelie | Film |
| 1997 | I Know What You Did Last Summer | Max Neurick | Film |
| 1996 | Murder at My Door | Teddy McNair | Film |
| 1993 | Sudden Fury | Daniel Hannigan | Film |
| 1992 | Billy | David MacGregor | TV |
| 1991 | Backfield in Motion | Tim Seavers | Film |
| 1990 | American Dreamer | Danny Nash | TV |
| 1990 | In Defense of a Married Man | Eric | Film |
| 1989 | Prancer | Billy Quinn | Film |
| 1989 | National Lampoon's Christmas Vacation | Rusty Griswold | Film |
| 1988 | A Night in the Life of Jimmy Reardon | Toby Reardon | Film |
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