Nintendo DSWell, being the Nintendo whore that I am I recently picked up the new DS. Over all it is good, it just takes a while to get used to the touch screen. It comes with a demo for the new metroid game, it's cool. But the only single player mode is "training". A good multiplayer mode is included though.
The only game I picked up was Super Mario 64 DS which is amazing and almost a perfect port of the N64 version. They added 30 more stars, and the ability to play as Yoshi, Luigi, and Wario. There are tons of mini games to unlock and a nice multiplayer mode.