Here is a segment from dailykos that is pretty thorough in the examination of the documents

http://dailykos.com/story/2004/9/10/34914/1603

But one thing that is telling  about quality investigations, is when one side grabs on to a piece of evidence and calls it a fact, when it is simply shown not to be.  Take the mysterious "th".   Many are latching on to the claim that typewriters could not type a small "th" back then, however, previously released Bush documents from the Whitehouse show that the small "th" did exist back then. 

Something else that is telling about this thus far is how little the Bush campaign is discussing their authenticity.