Johnny Galecki

Johnny Galecki
Galecki at PaleyFest 2013
Born	John Mark Galecki (1975-04-30) April 30, 1975 (age 41) Bree, Belgium
Nationality	American
Occupation	Actor
Years active	1987–present

John Mark "Johnny" Galecki (born April 30, 1975) is an American actor. He is known for his role as David Healy in the ABC sitcom Roseanne from 1992–97 and as Dr. Leonard Hofstadter in the CBS sitcom The Big Bang Theory since 2007. 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), and In Time (2011).

Galecki was born in Bree, Belgium, to American parents of Polish, Irish, and Italian descent. His mother, Mary Lou Noon, was a mortgage consultant, and his father, Richard Galecki, was a member of the U.S. Air Force stationed in Belgium, and also worked as a rehabilitation teacher. Galecki is the eldest of three children with a brother, Nick, whom he describes as a "mechanical genius" in the automotive industry, and a sister, Allison. Galecki grew up in Oak Park, Illinois.

During an interview with New Zealand radio station ZM, Galecki recalled his childhood relationship with his mother. As a child, he was well known for making up long stories and tales. In such situations, his mother used to make him play the "quiet game", where he had to see how long he could go without talking. He also recalled that despite being a loving mother, she was also very tough. One phrase she would lovingly use was, "I love you, now get out."