You can view that session below, where they're joined by some members of the cast in the second half of the talk, and you can of course read my review of the film here.
The DVD is out now at all good DVD shops.
Part 1 of 5
Part 2 of 5
Part 3 of 5
Part 4 of 5
Part 5 of 5
I know the final part may seem to have ended abruptly, but I was not about to pirate the DVD extra here, which you can watch if you purchase a copy, and after that it was the wrap up of the session anyway, so there you go.