The top 10 choices are rather interesting, and show a distinct trend;
namely: digital photography is "big" these days - bigger even than
Microsoft operating systems
1: The Photoshop Book for Digital Photographers by Scott Kelby
2: Adobe Photoshop 7.0 Classroom in a Book by Adobe Creative Team
3: Starting an eBay Business for Dummies by Marsha Collier
4: Mac OS X: The Missing Manual, Second Edition by David Pogue
5: Pokemon Ruby & Sapphire: Prima's Official Strategy Guide by Elizabeth
Hollinger
6: Who Says Elephants Can't Dance? Inside IBM's Historic Turnaround by Louis
V. Gerstner Jr.
7: Star Wars Galaxies: An Empire Divided by Prima Temp Authors, Temp Authors
Prima, Prima Development
8: Macromedia Dreamweaver MX Hands-On Training by Garo Green, Abigail Rudner
9: Stealing the Network: How to Own the Box by Ryan Russell, Ido Dubrawsky,
FX
10: Red Hat Linux 9 Bible by Christopher Negus
The fuller list is at..
http://www.lowth.com/books/tops/us_5.php