What's in your Tsundoku?

I know I'll never read all the books I have, but most of the ones I keep are ones I hope to get to.  The only ones I keep I know I won't read all of are many in my Golden Guide and Observers Guide collections.  I'm not much into collecting just to be collecting, but these are very small books and that's my large justification, lol.

I've got a small stack by the bed I want to get to next but right now I'm absorbed in the very slow reading of Eric Nisenson's Ascension, a book about John Coltrane.  This book is so amazingly full of rich thought and information.  I'm intentionally reading it very slowly so as to fully savor it.  This might well be the finest book on music I've ever read. 

Oh, and it fits in well with the thread topic in a way.  Coltrane's last tour took place in Japan and he was deeply fascinated by the country and it's history and culture, and he was hugely well received there.