If, for who knows what reason, you haven't yet got your copy of the SQL MVP Deep Dives book, you can't pass it up today.
It is the "Deal of the Day" at Manning, and you can get it for only $25!
Check it out at at: http://www.manning.com/nielsen/
(the main Manning page at http://www.manning.com/ mentions the deal, in the top right corner)
Use code dotd0726tw (exclamation points have been removed :-) )
There have been lots of blog posts on this site (and others) about the book. Here's my main one: