Few gaming icons are as fashionable to scorn as Sonic the Hedgehog. Poking fun of werehogs is an easy sport, to be sure. But his last few adventures, including the recent Sonic Unleashed, have fallen short of his celebrated original run -- at least by reputation. Some critics claim Sonic never really survived the jump to 3D and exists today only on the fumes of nostalgic good will. Others think the trouble started much earlier, when Sonic raced along so fast that nobody noticed the ground had run out beneath his trademark red sneakers.