Ioannes Galecki
Ioannes Marcus Galecki (vulgo John Mark Galecki; natus die 30 Aprilis 1975 in Bree) est actor. Notissimus est personis suis ut David Healy in serie televisifica Roseanne, Rusty Griswold in pellicula National Lampoon's Christmas Vacation, et Leonardus Hofstadter in serie televisifica The Big Bang Theory.