Tan-Gun and To-San by Jhoon Rhee! Grand Master Rhee kicketh much *** I wish on occasion the pictures were a little better (shots of his back don't really help much when he's doing something in front of him), but this series is great. It has been a great help to lowly white belt me. When I get the chance I'll need to pick up the book by fellow 70's superstar Master Hee Il Cho. I haven't seen in in 20 plus years, but here there are great pics in it.
I'm currently reading the "Martial Arts Book of Five Rings" and also "Hagakure: The Book of the Samurai." I've just started both but so far it's interesting.
I just finished Living the Martial Way by Forest Morgan.
I've read American Shaolin by Matthew Polly and I really really like that book. I recommend it to anyone out there who needs a good book to read.