More on the Katrina Video
I'm not sure how much credibility New Orleans Mayor Nagin really has left, but this somber bit in the Washington Post story stuck out to me:

In New Orleans, Mayor C. Ray Nagin (D) was visibly shocked when shown the recording by reporters.

It "seems they were aware of everything . . . that we would need lots of help," Nagin said after a post-Mardi Gras news conference. "Why was the response so slow?"

When the video ended, Nagin turned away and said, "Oh, God."