The Wii is the worlds first motion sensing, at home game system. It was such a revolution in gaming, that Nintendo code named it "Revolution" while they were designing it. It features a candy bar-like controller that is reffered to as the "Wiimote" the "Wii Remote" or the "Wii controller". In addition to the Wiimote, there is the Nunchuk, which connects into the bottom of the Wiimote. The Nunchuk provides the movement of both hands in a game, and an analog stick. The Wiimote also has the MotionPlus attachment, which makes the Wiimote pretty much pick up your every twitch at 1:1 reactiveness.
Out of all 3 consoles of generation 7, the Wii has the lowest failure rate. Heck, the Nintendo DS has a higher failure rate. The only problems with the Wii (So far) have been the same old, same old. The stuff you'd get with any system: Bad lasers, disc drives burn out, controllers get sticky buttons. As far as games go... Well, this system is not bad, but then again not good. It has mostly kid or family games, like Wii Sports, Wii Play, Pokemon Battle Revolution, Mario Party, Mario Galaxy, etc. Sure, it has some good "older" person games, like Goldeneye 007, Call of Duty, the Legend of Zelda: Twilight Princess, but not really anything like the 360 or PS3.
The prices on these range from $150.00 (New) to around the $130.00 area (Used) at GameStop. This is the cheapest console from generation 7.
The Legend of Zelda: Twilight Princess
Pokemon Battle Revolution
Super Mario Galaxy
Super Mario Galaxy 2
Wii Sports Resort
Just Dance 2