[vlogilvie]

There is a new one called "The Complete Walt Disney World" by Mike and Julie Neal. It has pictures and background info on every attraction.
The Unofficial guide is a good source for unbiased information.
Birnbaums is a good too, but it can be a little biased because it the official one that Disney releases.
Passporter by Dave and Jennifer Marx is a guide but also an organizer, and many people have found that helpful.
Deb Willis just released a new one called "Open Mouse" and it has information for any time of special need when traveling to WDW.

These are not guidebooks, but they are a lot of fun. The Walt Disney World Trivia book by Lou Mongello, and Hidden Mickey's by Steve Barret.