The Legend of Korra!
I know there are some Avatar: The Last Airbender fans here, so for those of you who don't know already: the first two episodes of The Legend of Korra are watchable RIGHT NOW at korranation.com! (Note: I don’t know if it’ll work for viewers outside the US–somebody give it a try and see?)

It’s the middle of the thumbnails at the bottom of the main page, the one marked “The Legend of Korra” and running 46 minutes and change. :D The first two episodes are both in the one video!

My household watched them last night, and oh, they were joyous. I love all the characters right out of the gate, both all the new characters and the one (much older now) familiar character who makes a brief appearance at the beginning. The updated technology adds a lovely new twist to the setting. Korra herself is great, great fun. And her polar beardog is adorable. :D

Go! Watch! And thank the nice folks at korranation.com for making the episodes available for the Internets to see!

(No spoilers in this post, but spoilers may appear in the comments, so use caution before you clickie!)

ETA: I am advised by a friend in Canada that korranation.com appears to be redirecting to a Facebook page if visited from outside the US. Sorry, viewers outside the US. Augh! :(

ETA #2: AUGH, have been advised that the korranation.com domain is currently redirecting to their Tumblr, even for US users. NOT HELPFUL. Drop a comment if you see this situation change!