You can see the Andrew Kramer SWAT Team behind the scenes here http://www.videocopilot.net/theblogshow2/blog-show-the-big-show-bowski/. Its not that complicated to do, but you need to plan ahead how you want the shot to be. For the panning shot you can take two static shots, one right and one left, then composed it together like is one shot and then simulate the pan with an After Effects camera. When you are doing this effect of duplicating people you CANNOT MOVE THE CAMERA at all, if you do the effects will be ruined.
