John Mark Galecki (born April 30, 1975) is an American actor. He played Leonard Hofstadter in the CBS sitcom The Big Bang Theory (2007–2019) and David Healy in the ABC sitcoms Roseanne (1992–1997; 2018) and The Conners (2018–present). Galecki also appeared in the films National Lampoon's Christmas Vacation (1989), Prancer(1989), Suicide Kings (1997), I Know What You Did Last Summer (1997), Bookies (2003), In Time (2011), and Rings (2017).
Christmas filmography[]
| Production | Year | Character | |
|---|---|---|---|
| Prancer | 1989 | Billy Quinn | |
| National Lampoon's Christmas Vacation | Rusty Griswold | ||
| Roseanne | "No Place Like Home for the Holidays" | 1992 | David Healy |
| "White Trash Christmas" | 1993 | ||
| "Home for the Holidays" | 1996 | ||
| The Big Bang Theory | "The Bath Item Gift Hypothesis" | 2008 | Leonard Hofstadter |
| "The Maternal Congruence" | 2009 | ||
| "The Santa Simulation" | 2012 | ||
| "The Cooper Extraction" | 2013 | ||
| "The Clean Room Infiltration" | 2014 | ||
| "The Holiday Summation" | 2017 | ||
External links[]
content from Wikipedia (view authors). |
|