Good stuff, although I will probably use the html5boilerplate for my actual VS2010 templates. :o)

Question, since you're a Microsoftie now - next time you talk with any VS2010 people, ask them when HTML5 is going to start validating in VS2010, or is there a way to get it to do so now? Right now when using the plain HTML5  it complains about every element, like this:

Validation (): Element 'html' is not supported.

Annoying!