Someone asked why the misplaced ball seems to "rise up". That's a result of a mix from the overlay back to the live feed. On-screen, the ball is only a pixel or two above where it was in the overlay, so it appears to rise slowly up.
All the guy had to do was slot them in the tight rack evenly for the balls to match perfectly (a longer rack would have been much harder). Sadly it didn't quite work out like that.
It could just be that they should have had just a little more tolerance in the width of the rack, and that those particular balls happened to add up to be slightly too wide for the rack.
I like the robot camera idea. Thinking about it, a reasonably convincing parallex-matching job could just have been done live, too, but I don't think either of these options would be anywhere near as reliable as the fake shake for a live broadcast. (By the way, if anyone is interested in a de-shaken version of the show, I can rustle one up.)
Thanks for the link to Penney's Game, Linda - I must have misunderstood what DB was doing in that clip first time around, so it turns out there was at least one genuinely interesting effect on display in that show. I wonder how many times he did it before the loser picked one of the most beatable sequences?
I wonder if Derren Brown is as clever as he thinks he is. I'm
certain that he's not as clever as Kuko thinks he is
This reminds me of an episode of The Real Hustle where they revealed a few illusions (of their own design). They did one where they supposedly slid a photo into one side of a video camera's field of view to fool the viewers in another room - that may have been their original intention but it looked to me like they just went for a still grab and wipe in the end.
How about this for an unneccessary complicated way of doing the trick? Balls made of, or painted with, some kind of photosensitive material that can be "printed" by laser from outside of frame. Doable?
David