Hello, I registered on this forum as it was one of the first results for Derren Brown's trick.
This did work for me, I became stuck to my seat. I was surprised because I'm normally sceptical about these kinds of things. When the video finished I felt like it had no effect on me and decided to move... I couldn't!
On the TV you could see people strugling to get out of their seat. For me it went differently, I couldn't move a single part of my body, not even my fingers, I could only move my eyes. After a few seconds I got felt a a rush of panic and suddenly I could move again. But for about 5 seconds, I was frozen!