Lady of Mystery wrote:Grab yourself a copy of Get Nyman, I know there's and effect on there that could easily be tweaked for what you want, plus it also tips one of the methods that I'm thinking of.
Ben Earl's trick is pretty much an altered version of the effect Lady of Mystery is thinking of. The method is the same (to be precise, part of the method is exactly the same and, I suspect, the other part was the same too, but could have been done in a much more expensive way - it is impossible to know for certain), but the presentation is totally different. If they did do it the expensive way it must have been to get some cool stuff out of the production company!
A word of warning, though: The method for this trick might not suit you at all. I cannot say more without tipping the method and, as I have huge respect for Andy Nyman, I am not going to do that.