One of the Nintendo Wii's key features will be access to a massive game library of titles from yesteryear. The Wii unit can play GameCube discs, but titles from the NES, SNES, Nintendo 64, Sega Genesis, and even TurboGrafix 16 will be available via Virtual Console service. So far, Nintendo, Sega, and Hudson have pledged titles that will be available for play with other companies sure to sign on before launch. Here are 15 titles that should be available and are worth a brief trip back in time.