Two talks from the Future of Humanity Institute are now online (this is the first time we've done this, so please excuse the lack of polish). The first is Anders Sandberg talking about brain emulations (technical overview), the second is myself talking of the risks of Oracle AIs (informal presentation). They can be found here:
Fesability of whole-brain emulation: http://www.youtube.com/watch?v=3nIzPpF635c&feature=related, initial paper at http://www.philosophy.ox.ac.uk/__data/assets/pdf_file/0019/3853/brain-emulation-roadmap-report.pdf, new paper still to come.
Thinking inside the box: Using and controlling an Oracle AI:http://www.youtube.com/watch?v=Gz9zYQsT-QQ&feature=related, paper at http://www.aleph.se/papers/oracleAI.pdf