If this works in real life as the video shows, it’s going to be amazing.
Nintendo's creativity is amazing. I don't know if this will be a big deal, but it's super cool.
This is Nintendo's next video game system. No more separate portable vs console systems. I bet it's computationally-speaking underpowered, compared to PS and Xbox (and iPhone 7) and it probably doesn't matter.
Reverse chiptunes: process the audio coming out of a Nintendo and play it on real instruments.
Play Super Mario Bros. using characters from other games (i.e. as Mega Man!)
Video shows off some features of the new Nintendo DSi. It looks great, but not great enough for me to upgrade mine, which has been sitting in a drawer for months. I should sell it. My iPhone is covering all my portable gaming needs: toilet entertainment.