Books: Software Estimation: Demystifying the Black Art
Another great book I've read recently was Software Estimation: Demystifying the Black Art by Steve McConnell. Steve is the well-known author of Code Complete 2 which is widely regarded as a classic in the industry.
In this book, Steve takes a very pragmatic view at how software estimation might be carried out. He starts with some solid examples of how far off the mark we all are at estimating very basic things in our lives and our world and then shows how poorly software projects are estimated, almost without exception. I liked the way that he doesn't try to pretend that you can get it very accurate but at least you can make estimates better. He provides lots of examples from a variety of methodologies and compares their effectiveness.
Recommended!