You can see Nintendo President Satoru Iwata enjoying video chat with US chief Reggie Fils-Aime in this Wii U Chat video .
Wii U Chat is installed on the Wii U and enables you to chat with friends on your Wii U GamePad or on your television. You can even draw on the screen and, best of all, enjoy video chat when you are watching TV. Iwata said you could be watching a sports game and talk about the game with a friend while it's taking place.
Also, when you're playing a game, the Home button on the GamePad will flash to let you know that you are awaiting a video call via Wii U Chat.