I'm reading a book on my Kindle at the moment, it's called "Moonwalking with Einstein." It's about a journalist who was sent to cover the US Memory Championships, an event where people recite Pi to tens of thousands of places, memorise decks of cards and such. The journalist (and author of the book) was persuaded to have a go himself and ended up training for and winning the event himself just a year later.
Although it sounds a bit of a strange topic for a book it has so far made for a very compelling read. I'm around halfway through it and I've used some of the methods covered in the book myself and can memorise and recall lists of items much better already! I'll certainly be reading on to the end of the book.
Check it out.