Johnny Galecki
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.
- Popularity : 24.216
- Known For : Acting
- Birthday : 1975-04-30
- Place of Birth : Bree, Belgium