I have a copy of the book and it is excellent. Although I bought it for two of the featured projects, reading the entire book and reviewing the code from all the projects has been very helpful.
Cool, thanks for the comment!
By the way, I'm always interested to hear from people who've built projects in the book - or, better still, used them as a starting point and then built something a bit different. Zap me an email with pics and it'll make my day: firstname.lastname@example.org
Practical Arduino: www.practicalarduino.com