From the brilliant performances that made us laugh, cry, and think about the world in new ways, to his personal passions such as campaigning for a new G.I. bill, and raising money for Hurricane Katrina victims, Robin Williams brought an ease, class, and sheer genius to acting that can't be matched. He was truly one of a kind and at 63, too young to go. Luckily Robin Williams left us many great moments to revisit. Here are our picks for the 10 Robin Williams moments that millions of fans will cherish forever.