The most interesting thing about the Brian Williams story is that he now admits to "misremembering".
It's fun to go back and see when he was telling the story about being hit by an RPG in his helicopter and try to catch lying clues.
1:25 On this video, you can see him look down and to the left as he states "including the one I was in" to David Letterman, despite maintaining eye contact through the beginning of the interview. However, he shakes his head yes, very convincingly.
1:39 he purses his lips very slightly then begins talking again, and you can hear the sound of him holding back the "Uhh" sound.
3:12 to 3:18 after calmly and purposely telling the true facts of what happens he begins his apology with a lot of head shaking "no" and a very high blinking rate
So was he lying about seeing bodies floating by in Katrina?
1:06-1:11 When he starts telling the story, he refuses to face his interviewer directly, instead looking only at him sideways.
2:24-2:27 When they get past the story, he then faces him and relazes a bit until when starts talknig about Katrina again, he juts his chin in defiance,
2:40-2:49- When he talks about bodies floating by again, he begins shaking his head "no",