Impressive. Bryan will know how this was done, I’m sure, but it’s not obvious to me. I’m guessing they simply superimposed the lips of some other guy, but if so then they did a very slick job of it. The alternative is that they used AQ’s own footage, cut various frames showing Bin Laden’s lips in various contortions, and then painstakingly stitched them together to sync them up to a 90-second audio track. That’s a long way to go for a gag, though. Any other theories?