William Bartholomew just published a new book on MSBuild and TFS. There is a great forward by Richard Hundhausen (Famous TFS Author and top MS consultant). I personally don’t use TFS yet, but I do use MSBuild and plan on using it more extensively for web deployments going forward. I have not yet read the book, but am anxiously looking forward to. It is a topic that IMHO has been very under documented. This should be a big help!
Inside the Microsoft® Build Engine: Using MSBuild and Team Foundation Build (PRO-Developer): Sayed Ibrahim Hashimi, William Bartholomew: Books