Hi there, Occasionally on TV, and rather annoyingly, they have a presenter 'talking to themselves' - almost as if they had an identical twin. One version of the presenter is one the left and another on the right. It's even more annoying when they get them nodding in agreement! I love messing around with video effects and would really like to know how this is done. I imagine this is done by filming two clips and 'merging' them together. Does this effect have a name, and is there any software that can acheive it? Thanks, Jon.