Wii Remote
The Wii's signature feature is the Wii remote controller, which uses infrared detection and accelerometers with its buttons. Gamers swing a controller in front of the screen, making the Wii a console that works on actual physical activity.
Games
The Wii was the first Nintendo console to use full-size CDs for its games. Nintendo used cartridge-based games until the GameCube, when it used smaller laser discs designed specifically for that console.
Virtual Console
The Virtual Console is another popular feature of the Wii. Through an Internet connection, players are able to purchase legal emulations of games from older Nintendo systems for play on the Wii console.
Classic Controller
The Wii also has a "classic controller" for use without the physical swinging, created mainly for use with the virtual console games.
Compatibility
The Wii will play GameCube games (provided a GameCube controller is connected to the console) and will connect wirelessly to the Nintendo DS hand-held console.