Definitive Online Marketing Books?

While I’m using the lazyweb, I’ll add this as well:

Recently I was asked to recommend a really good (and current) book that explains the essentials of online marketing. I could think of lots of books that touched on one or two aspects of Net marketing, but I didn’t have any idea what to suggest for an overall “guide to online marketing”. Most of the ones I found on Amazon seem to be pre-dot-bomb, and therefore not that useful.

I’d therefore like to solicit the advice of you my good reader.

If you could recommend just one online marketing book what would it be? If there isn’t one book, do you recommend books on specific aspects of online marketing? Send me the name and author of your favourites and I’ll publish the list.