I can't help it, I just LOVE genealogy and DNA, especially that mitochondrial stuff that can track your ancestors back thousands of years. I'm sometimes wondering what did my forefathers do, where did they live and what was their everyday life like. I'm devastated that I can't carry my whole library with me, I have several books over this subject (as well). For example "After the Ice" by Steven Mithen is a great book to read, I love the way it is written. (Part of it official, part of it like a novel.)
Still, my favourite book of the subject is Bryan Sykes's "The Seven Daughters of Eve". I took it with me the last time I was at home, since I wanted to read it again. It is about the theory about how pretty much every European are descendants of 7 women. Yes, total of 7. And proof to go with it. It is one of the best science books I've ever read and my mind always runs wild after reading it. (E.g. after finding Ötzi the Iceman, they were able to trace his mitochondrial DNA to his living relatives.)
Yes, biochemistry is one of my favourite sciences (just after astronomy, somewhere around physics, chemistry, geology, etc.). What would be a better way to relax than a book about biochemistry (in German) and a glass of wine? Or a book about prehistory?
P.S. The new usability of Blogger update is faeces.