Superb RatherGate roundups today at Blogs for Bush, QandO, and Hugh Hewitt. I am convinced it is impossible for any fair and reasonable person to read these and not conclude that Dan Rather has been caught in one serious hoax.
If you're joining this late, you may want to read Powerline, which summarizes and expands upon a new LA Times report on the influence of the blogosphere. You may also want to read the 22-point rebuttal to Rather's report, gathered at RatherBiased.com.