I just finished this series and I want to say it is truly amazing. I loved the story and all the characters and it just played off of Alice in Wonderland, but was something much more complex than that. You'll see the rabbit, mad hatter, cheshire, alice tied into this series in it's own unique way. I was really sad that the ending was so abrupt (I feel like they just tried to throw things together to make a semi closure to end the Season 1), a lot of things are left open and they can definitely create a Season 2 (however I'm not sure they will or not, but I hear it leaves off manga vol. 8?).
This anime has great music and well drawn characters. The time era chosen was perfect for the series, as well as their apparel (very unique/detailed). There are a lot of likable characters as well; I think I enjoyed each of them because of their personality. I'd have to say Gilbert was one of my favorites <3.
And if Pandora Hearts confused any of you, here is my take
on the whole story from watching the anime:
Spoiler Alert! Click to show or hide
Elliot - reincarnation of Glen, that's why he says he wrote "Lacie"
Oz - reincarnation of Jack
Vincent - I think he killed Alice (just because of the scene where he throws Alice's cat at her and he's holding scissors; I also know the Will of the Abyss doesn't like him) and had some part in "Sabrie." He also took his brother Gilbert with him to the Abyss and then they reappeared later in the future.
Cheshire - is the chain form of Alice's pet cat
I wish I knew more about the story, so I most likely will go on to read the manga. :}