definitely motion controls. achievements are tiny compared to the revolutionary change that motion control has brought to the industry.
end of '08 predictions: wii - 43 million, 360 - 25 million, ps3 - 20 million
Games I've beat recently: Super Mario Galaxy, Knights of the Old Republic, Shadow of the Collossus
Proud owner of wii, gamecube, xbox, ps2, dreamcast, n64, snes, genesis, 3DO, nes, atari, intellivision, unisonic tournament 2000, and gameboy