Dear Speakers: things that interfere with getting a message across to an audience
duncandavidson.com
duncandavidson.com
For those who do want to get better at public speaking (including me), I'd highly recommend the book "Presentation Zen."
You can see Jessica Livingston pacing back and forth here: http://blog.businessofsoftware.org/2008/12/jessica-livingsto... It is annoying, and she seems nervous.
Note: This is not meant to pick on JL, very few people get it right, and I could just as easily have picked another example.
It's just like every other artform - the rules are there to give people a framework they can work from, but the best performers break the rules. Clifford Stoll is a great example of this.
1) Video tape yourself giving your talk. Tape off a section of your floor, set the camera up on a tripod, and give your talk (complete with powerpoint or whatever you're using). Then watch it. Ask yourself, "Would I want to listen to this person?" Probably the answer is "no". Figure out why, and fix it.
2) Just like you should walk with purpose, your hand should communicate with purpose, too. Too often speakers flail their arms wildly about, rather than using them as a tool of communication.
(You could say, "Well, that's because all your talks are so boring.". Maybe, but this happens at even the most interesting speaker's talks as well.)