The Legend of Korra
OMG, this show is everything I hoped for and more.
I love Korra. Toph is probably always going to rule my heart, but Korra is a very very close second.
I have many more thoughts but I'll get the ship thing out of the way for now. If Mako/Korra is not the canon ship, I think I just witnessed the greatest writer trolling of all time, because the episode is begging you to ship them.
And not that I think the creators have any duty to tell anything but their own story, but I can totally see them cashing in on the Zuko/Katara popularity. Though the personalities of Korra and Katara couldn't be more different.