I have been stunned by the intuitive interface and excellent internet browser (using now). I haven't actually played anything yet because after setting up I just played with the browser and apps. I'm stunned by the ease with which it connected to my cable and TV. It connected better than my universal remote and the gamepad feels great in my hands.

it easily has the fastest browser.
its better than my PC in speed.

what games do you have/did you get?

it came with nintendoland and i have wind waker hd.  gonna probably get rayman legends and mario kart sometime this summer.  still got a lot of ps3 stuff to catch up on.  gotta finish those 2 and twilight princess (never played) before lou remastered comes out

Mario kart is amazing.
I would also like to recommended some games.
Monster Hunter 3 U
Super Mario 3d World
these 2 games in my opinion along with Mario Kart are must haves.

Glad you're enjoying it so far! I agree on the internet browser part. It's surprisingly fast, after using the 3DS browser I figured it was futile hoping Nintendo would make something fast & usable xD

Wind Waker HD is a great game though, I'd say that's a pretty good way to start yourself off.

Congrats. Glad you like it. Also, based on your username I highly recommend 3D World and Tropical Freeze. Both are outstanding.

Oh, and Mario Kart, but that's a no-brainer.

Congrats! I hope you enjoy it!!

Congratulations! And yeah, you can even watch Twitch via the browser, and still web browse on the game pad!

Glad you're enjoying the Wii U! It may not be the best selling Nintendo device but it still has great Nintendo first party games.

And yeah the internet browser is really great. I like using it for youtube more than the YouTube app because you can watch the video on TV and browse other tabs on your GamePad. You can also google search some good anime sites that support html 5 and display them on 1080P!

I live My Wii U as well. I've played it every day since Mario Kart 8 launched. Currently playing AC4 and Rayman Legends. I also just ordered AC 3 since Black Flag made me really like the series. 

I have Earthbound, Child of Light, and Pikmin as well. I recommend ALL these games.