This gets me excited:
In addition to providing single and multiplayer thrills at home, the Nintendo Switch system also enables gamers to play the same title wherever, whenever and with whomever they choose. The mobility of a handheld is now added to the power of a home gaming system to enable unprecedented new video game play styles.
Reminds me of Microsoft Continuum and that iPad-iMac concept by Tim Van Damme where one could slide the iPad into the iMac to upgrade it to a full blown Mac. Of course it will only be a matter of time before Apple actually copies and implements this (and then touts this, as being its New Big Unprecedented Invention (TM) ;))