webmaster book recommendation?

something webmasterish and challenging

[httpwebwitch]

I got a gift certificate for a bookstore and I'm looking for recommendations. maybe something about AJAX, SQL or PHP... no beginner books (yawn) - I'm looking for something advanced (practical) or profound (theoretical)

recommendations?

[phranque]

if you haven't yet, tim berners-lee's "weaving the web" [w3.org] is required reading.

[httpwebwitch]

got it, read it, returned it
any others?

found it at the public library