We are currently at the Cyberscience summit in London and this can be seen live here:
http://www.livestream.com/excites
There are a bunch of interesting talks coming up:
1. 11:20 to 12:55 (interesting)
2. 14:00 to 15:20 (very interesting)
3. 15:40 to 16:40 (discussions/panel)
4. 17:00 to 18:00 (includes a talk by Eric Paulos from CMU about Participatory Sensing).
Gopal