For the past few years, I've taught an advanced Photoshop course at the international online graphic design school, Sessions.edu. Every once in awhile they interview their instructors for the Campus News Newsletter and this time it was my turn. Whee! You can click this link to give the interview a read: http://lesa.in/ODC69J
It includes lots of insider info on the process of writing and producing a book like Photoshop CS6: The Missing Manual, which you might find interesting (or disturbing or both). I hope you enjoy it!