Stick a double-lutz landing with a flick of your wrist. Or speed down the slopes with a wave of your hand. With Mario and Sonic at the Olympic Winter Games, it's never been easier or more fun for armchair Olympic aspirants to score gold-medal performances. Competitors can pick from 20 of their favorite Nintendo and Sega characters to compete in 27 cool events. Ages 6 and up, Sega of America, $49.99, Nintendo Wii; $34.99, Nintendo DS.