Johnny Galecki

Date of Birth: 30 Apr 1975

Country: USA

Biography: John Mark "Johnny" Galecki (born April 30, 1975) is a Belgian-born American actor. He is best known for his roles as David Healy in the ABC sitcom Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in the CBS sitcom The Big Bang Theory...(Wikipedia)

Biography submitted by hellboy76

Find more information about Johnny Galecki at The Internet Movie Database