Al Gore speaks to congress

i found this to be an interesting listen (second video):
http://www.21st-century-citizen.com/2007/07/20/the-top-5-global-warming-videos-on-youtube/
i am beginning to change a perception of al gore. i also found it interesting the way in which he spoke to congress. it was careful and clear (at least more than what i had previously thought al gore was capable of).