You can watch the ICM invited and prize winning talks here, both live and archived. Speakers of note include Terence Tao, Avi Wigderson (the first two talks of the third session) and, of course, Jon Kleinberg (last talk of the fifth session). Avi has a paper to go with his talk.
(Thanks to Lenore Blum and Bill Gasarch for the pointers above.)
In other science news, Pluto is no longer a planet. Everything I learned in grade school was a lie.