I have Wind Waker HD, Viewtiful Joe, Mario Kart 8 Zombi U, New Super Marios Bros U, Donkey Kong Country: Tropical Freeze, Monster Hunter Ultimate and Super Mario 3D Land plus a bunch of downloadble titles.
Honestly I like my Wii U and it has some of the best platform games to come out in a long time but I wouldn't have bought it if it was full price. I had snagged a Wind Waker bundle for $200 on Amazon. I use it mostly for Netflix or Amazon video since I play on my PC mostly or 3DS.
I don't, but I'd like to get one when I have the money. There aren't a whole lot of games I want for it, but I bought a PS3 for only one game so it wouldn't be fair to leave Nintendo out of my poor monetary decisions.