Love Autobiographies especially by comedians
This is a good book which touches on some of the techniques used for memory training but mainly follows the author through being a memory novice to competing in the US memory championship. Its not a memory training aid but a relaxed, light hearted take on the people who commit themselves to memorising infeasible amounts of data, and the so called savants who can do this effortlessly.
In an easy to understand style that never talks down to the reader, Ben Goldacre pokes an big stick into some of the organisations and characters that shape how science is understood outside academic circles. From debunking the use of scientific sounding names in marketing ("now with madeupnameium to make you look younger") to disecting some of the more dubious characters that pollute our media this book analyses the methods used to show how they are as far removed from real science as it is possible to be.
I would challenge any reader not to be horrified by the way in which the MMR scandal was prolonged and fanned by the media, in spite of mounting evidence being presented to show that there was no provable link with autism. And then, noting when this book was written, predicting how the media would then turn on Andrew Wakefield when he was placed before the GMC without ever considering the role they played in whole shameful episode.
This is a great book that opened my eyes to many of the practices that companies and individuals use to make themselves wealthy without ever showing if their product/service/diet etc is effective. Goldacre also delves into the power of placebo and how convenitional medicine if failing to exploit it.