These are all great recommendations. I've been a fan of Michio Kaku for a bit, but haven't read this book. I've been really into music in the past, and currently am geeking out over lots of amateur radio stuff, so the second book looks awesome, too. And psychology has always fascinated me. It was a favorite class in school, and always provided useful insights when I was a personal trainer. Thanks for sharing. These all look worthy of going on the never ending, impossible to complete, reading list.