Know what you're getting with the WII U everyone, least powerful of the new systems and it hasn't received nearly as much 3rd party games and have missed some big franchises. You will get all the big time Nintendo exclusives though and it is really good for kids gaming. Of course Infinity and Skylanders are big for this system. The games take a long time to go on sale or get discounted like many of the titles on XBOX/PS3 and PS4.
Best games for the system are the exclusives and they have come out extremely slow. Wanted are new Metroid and Zelda games...I'll probably be checking out this Toad game (my kid loves Toad, even was him for Halloween) and this Remix game (I think another in the works) even though it isn't the full NES games.
Quick list of probably the best games on the system besides Infinity: Mario Kart 8, Smash Bros, Mario 3d World, Mario U, Wind Waker HD, Donkey Kong Country, Bayonetta 2, Hyrule Warriors.
Quick search on Amazon: Lego Hobbit $19, Lego movie $19, Lego Marvel $15, Lego Batman 2 $15, Duck Tales $17, Mickey 2 $12, Injustice $15 so you can get some decent games cheap.
Might be a little pricey just to add another system in the house for some, but we are all FBG's right?? Mario Kart really is a system seller, we have downloaded/got old copies of every Mario Kart except for Mario DS, it really is hard to go back past anything before the Gamecube one once you see this new one.