I don’t have anything civil to say about the possibility of these frogeries that John Moser references, but you can follow the whole thing with, of course, great links, over at Instapundit and Powerline, who--it would seem--may be responsible for breaking the story.
Drudge claims that CBS is launching an internal investigation and Dan Rather is mighty upset.

I can’t help noticing that some Demos are claiming that if this is a forgery than Karl Rove is responsible. This guy Rove is really something isn’t he. What a genius! What virtu!