Johnny Galecki is a Belgian-born actor from the 1990s to the present. He's starred in two highly successful TV series: "Roseanne" (as David, boyfriend of Darlene) and "The Big Bang Theory" (as Dr. Leonard Hofstadter), but he began his career at an early age on the stage. His first major film role was as Rusty in Chevy Chase's "Christmas Vacation". Among his other notable film appears are Prancer, Suicide Kings, and I Know What You Did Last Summer. He has had numerable TV appears including regular appearances on "My Boys", "Entourage", and "Hope & Faith".
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