I have to admit, the NGP sounds pretty cool. I was a little skeptical at first because it sounded alarmingly like the N-Gage but after seeing the features, it does look pretty cool. The touchpad on the back has some cool potential, now let's just hope people actually use it and take advantage of all the cool potential.
My only worry about this thing is the price. If the 3DS already costs $250, I can only imagine how insanely expensive this is going to be.
All in all, I'm excited about it and more interested in the NGP than the 3DS (though that's mainly because I know the 3DS price).