(Or, rather, struck again last summer.)  I just found Jeff's post about receiving a book from Petzold complete with witty comments.  I was also a lucky recipient of an autographed book, so I thought I'd share what Petzold had to say to me:

No color, alas, but plenty of depth!

Funny stuff!  (He's referring to this discussion, in case you missed it.)  I haven't had a chance to read the book, but it looks really good.  To say "thank you," I've been meaning to send him a signed copy of Silverlight 1.0 Unleashed, but I haven't been able to come up with something witty enough to say.  "No third dimension, alas, but plenty of color?"