OMZen - 10:03 am on Mar 31, 2010 (gmt 0)
Agree with roadkillu @ "art of seo"
It'd be desirable to read "Web Analytics 2.0: The Art of Online Accountability and Science of Customer Centricity" too. ( Assuming you have already read the "web analytics an hour a day" )
(Note: the later 2 books deal strictly with seo analytics skills)