Avatar: The Last Airbender
Mainly nearly ALL of the season 1 episodes. I've only got one disc to go, but so far, it's an ASS-KICKING series. Why didn't I get into this sooner?!?
I've been wanting to see the series since seeing some fanart and clips of the show, and I've FINALLY had the chance to see what it has to offer, and so far, it's really good!!
EDIT - I've now watched ALL of season 1, and it's SO GOOD!! I'm now wanting a release of seasons 2 and 3 NOW!!!!