Dave at neuromeme.com wrote to say that NNT’s talk at the Hard Problems symposium were up (Thanks Dave!). The two together are about 15min.
[youtube=http://www.youtube.com/watch?v=JgOqZEA0Vmg]
[youtube=http://www.youtube.com/watch?v=x7XpUzDrv3A]
You can watch the entire collection of videos (if you have the Real Video player installed) here.