Who better to ask about favorite genealogy books than the genealogists who share ideas via Twitter? Here are the first answers to come in, along with the poll and my own answer:
POLL: What is your favorite genealogy book & why? If you’ll reply via Twitter I’ll compile the recommendations and post them online @ http://tiny.cc/RelMusing
Somerset Homecoming is a favorite of mine. The author researched a communiity once enslaved on Somerset Plantation. See whose favorite this is: http://twitter.com/AYWalton
Family Chronicle books: 500 Brickwall Solutions to Genealogy Problems & More Brickwall Solutions Many ideas to try! Favorites of: http://twitter.com/mdiane_rogers
Fave genealogy book is The Family Tree Problem Solver by M. H. Rising, will probably be Pro Genealogy by E. S. Mills (when I finish). Favorites of: http://twitter.com/MichaelHait
Land & Property Research in the U.S. by E. Wade Hone, et al. has been so useful & informative in much of my genealogy research. This is a favorite of: http://twitter.com/FamilyStories
So many favorites! Google Your Family Tree and ProGen rank near the top of my list though, after personal family genealogies. These are favorites of: http://twitter.com/rcurious
My fav genealogy book is The Sleuth Book for Genealogists by Emily Croom because I love solving family history mysteries with clues! This is a favorite of: http://twitter.com/BBPetura
We’ll expand the list as more nominations arrive! Thanks to all who contributed ideas right away!
Barbara / http://twitter.com/BBPetura
Relative Musings 
Interesting question – I too like The Family Tree Problem Solver and The Sleuth book. Some books/articles are USA-centric (or UK) but still useful for ideas/process even if not researching in US.
Also Professional Genealogy, although I use that at the BC Genealogical Society library. I don’t have my own copy. Some of my own genealogy books are listed at LibraryThing under ‘eicuthbertson’.
Then there is Evidence Explained! and the quicksheets. I still like Christine Rose’s Genealogical Proof Standard and Brenda Dougall Merriman’s About Genealogical Standards of Evidence as well.