I'm not hard to impress, so all I can say is I'm really pumped for the Wii U's release.
The Wii wasn't such a groundbreaking console since it lacked on quite a few things, but with a bunch of awesome new games coming up, and the fact that Nintendo's new console (finally) supports 1080p video resolution, I'm happy.
I'm also really excited that Nintendo are going toward the "hardcore gamer" direction. Nintendo offers some great games, and seeing games that I can really get into less casually will be a great experience.
Also, does anyone know how good the graphics and gameplay will be for the Wii U? Like for, for example, Black Ops II, will it have the same (or very similar) graphics and speed as a PS3 or 360? I'm just wondering and haven't done any research yet. :-)