Ok, I stole that title from The New York Post, but it was just too perfect.  I am not intending to make any political statements about this I just had to point out some things from the video.  I leave the "What if George W. Bush did this rants to Sharky."
Here is the link: http://www.youtube.com/watch?v=BpEckWHSvXk

I think we could we could all learn a few things from this video.
First off, if you find yourself fighting heavy eyelids it is not a good idea to lean on an elbow.  Game over at that point.

Then there are the ever so near flawlessly executed cover-up maneuvers Slick Willy utilizes.  

1. The first one is easy to miss.  He is leaning on two fingers and when the grip slips and his head dips he very seamlessly moves his hand back as if he is cupping his ear to hear what the speaker is saying.  Problem, Bill you are sitting 5 feet directly behind a rather loud speaker, who is speaking into a microphone.  Think; location, location, location when incorporating this move.
   
2. Then he initiates a two perfect "falling asleep head nod into a nod in agreements".  The second is better than the first.  His head tips forward and instead of jerking back up he effortlessly brings it up and then right into bobbing his head in agreement.

All this being said, Bill makes a fatal error just before the video ends.  He just cannot resist checking his watch.  I am not aware of any move that this can be done without it looking like you are checking your watch.  Sure, you could do it and not be seen (unless you are sitting directly behind the speaker), but if it is seen it is what it is.