Here is high-speed video of President Obama's speech at the "Climate Change Summit" in Copenhagen, where he spoke without his teleprompter (TOTUS - Teleprompter of the United States). Obama's head was really bobbing up and down as he looked at notes, since he did not have his teleprompter to provide his usual side-to-side head movement speaking style (Whatever happened to a good speaker making genuine eye contact with the audience?). This video is set to interesting music. Obama apparently looked down at his notes 187 times during the speech. Now we know why he normally uses a Teleprompter!
Here is Obama's speech in normal speed time.