This finally pushed me to move Simon Peyton Jones's presentation on How to Give a Good Research Talk from my Google Video account to YouTube. The original recording unfortunately has dodgy audio and video quality but it's still a gem of a talk. Check it out:
http://www.youtube.com/watch?v=y1knJ6GIUr0
It's lucky they recently removed the 15 minute limit on my YouTube account. I would probably not have had the patience to chop up the video.