I arrived at work today to find this package.
It's from one "C. Petzold", whoever the heck that is.
Inside was a copy of the book 3D Programming for Windows: Three-Dimensional Graphics Programming for the Windows Presentation Foundation.
It's even inscribed:
This is, of course, a reference to my post How Not To Write a Technical Book, in which I rather harshly called Petzold's previous book "a greyscale sea of endless text and interminable code", and compared it very unfavorably with Adam Nathan's book on the same topic.
I can't speak for the quality of the book, as I haven't had time to read it yet. But if nothing else, it tells us that Charles Petzold has a good sense of humor. (And, indirectly, it demonstrates the value of an "about me" page on your blog with your contact information.)
Thanks, Mr. Petzold.