I don't watch a lot of TV. Actually, the only "TV" I watch is on Hulu and Netflix. On any given week, I watch at most 5-10 hours TV/movies. Not much by normal standards. So, you need to trust me when I say I've found something worth your time. Furthermore, this series is only 3 seasons long, and each episode is only half an hour - not too much of a time hog. Ready for it?
Avatar: The Last Airbender animated series. NOT the movie, which I hear is horrible, but somehow something I should still watch.
It is hard to express how fantastic this cartoon is. I laughed. I cried (yep). I cheered. I gleefully clicked next episode after episode to find out what happens next. There's comedy, action, suspense, romance, tension between good vs. evil, and well crafted character development.
Please excuse my gushing.
It has a heavy Asian/Anime influence, but is still very much an American cartoon. The world is comprised of four nations: Water, Earth, Air, and Fire. Each nation has people capable of bending those elements. As the intro states: the four nations used to live in harmony. Then the the Fire nation attacked. Only the avatar, master of all four elements, could stop him, but when the world needed, he vanished. A hundred years later, a brother and sister discover the new avatar - and airbender named Aang. His airbending skills are great, but he has a lot to learn before he can save anyone from the fire nation. This series tells their story.
If you have Netflix, watching this is a must. You can also get it on Amazon for a very reasonable price. Trust me, you'll love it too.