Just wanted to quickly point you to an excellent interview with William Bartholomew offered by Radio TFS. William and Sayed Hashimi are the much-praised authors of Inside the Microsoft Build Engine: Using MSBuild and Team Foundation Build (Microsoft Press, 2009).

Check out the reviews at Amazon to get a sense of just how welcome and appreciated the book is. The most recent Amazon review includes this: “Being able to finally grasp those elusive concepts was a joyous event.” This feeling is also shared in the Radio TFS interview when the book is described as “really really really really good.” 

The intro page for the interview is here:

http://www.radiotfs.com/2009/07/21/TeamBuildWithWilliamBartholomew.aspx

And the interview itself is here:

http://listen.radiotfs.com/radiotfs_024.mp3

Enjoy!