If I'm not mistaken, the Wii U's gamepad connects via bluetooth. Do you think we'll see any apps pop up for smartphones and tablets to use the gamepad as an input method like we saw with the wiimote and PS3 controllers? Then you could use your tablet-like gamepad to control your tablet! Warning: Spoilers inside! I wonder if you could also write an app that sends data to the gamepad's screen. That would be interesting.