So his site was a breath of fresh air, to see examples of good and not-so-good presentations. He provides easy, "duh" kind of tips that I forget all the time:
*Don't put your hand in your pocket
*Don't fold your hands across your chest
*Don't do a very complicated visual and think you've actually communicated anything
There's a bit in there about presenting naked too, but you didn't hear it from me!