Definately the DS. Every gaming console/handheld has been basically reinventing the exact same thing since the Famicom.

Nintendo, interestingly, is now focused on bringing new methods of playing, redifining how you take your video games.

I've had touch-screen palm pilots/PDA's for years now, and have played alot of different games on them. But I can honestly say that each individual mini-game on "New Super Mario Bros." is better than anything I've seen attempted in that time.

i've been a sony fan, and a genesis one before that, but I can't deny that Nintendo just basically knows how to make fun games. Most companies today are lacking that.