What Was Your Favorite eBook of 2012?

hunger;

After getting an iPad for Christmas last year I really started to read a lot of eBooks and I’m absolutely loving it. My favorite would have to be the Hunger Games series, although I’ve since read quite a few others which have been fun such as Fablehaven and The Uglies. Right now I’m working on Ender’s Game. I’m wondering what everyone else read that they thought was exceptional last year?