So another gaming website that shan't be named posted their entire run through of the Nintendo floor show for the Wii U on their site. You can see it over here.  
 
Couple thoughts from me: 
 

• That Chase Mii game actually looks pretty fun, though not sure how long that will last. Also, five person simultaneous play.
• Interesting example with the Zelda "demo" of how you can kind of customize where you want information displayed; have the map up on the TV screen or on your controller? Bring up that weapon select menu?
• Seems very responsive
  
• Despite Twitter buzz that the controller feels pretty comfortable and light, still looks weird seeing such a rectangular device held in such a way.
• Nice to see a headphone jack for bedroom play...wait...