Reading is, after all, fundamental. Nice interview with the creator of the Navy Professional Reading Program here. This program grew out of the CNOs recommended reading list but I think the Navy was right on the money in devising this particular program. You can easily zero in on either a general topic of interest or a list of books for a particular rank.
Interesting that they are looking at how to integrate Kindles and, I assume, other e-book readers. I maintain that the Kindle is the ideal technology for military personnel. It is light, easy to read, good battery life, and stores lots of books. Hard copy will be good for libraries but I want to have my Kindle with me.