KINDLE PAPERWHITE!  It sounds like the name of a teacher at Hogwarts, but the Amazon Kindle Paperwhite is no joke (though it may offer some magic under the hood...zing).  Aaron gets some hands-on time at AT&T Unwrapped in New York.  Featuring the ability to keep 1,100 books in the library thanks to 2 GB of internal storage, Paperwhite boasts up to 8 weeks of battery life (with wireless off).  The ad-supported version is $119, while the ad-free variant will set you back $139.  The 3G version that's coming to AT&T is $179.