Illusionist Derren Brown tonight appeared to have left people stuck to their seats following a stunt aimed at making people temporarily immobile.
The star - who last week claimed to have picked the winning British National Lottery numbers - showed a short film on his Channel 4 television show.
Viewers were told to sit back in their chair with their feet flat on the floor and their hands on their legs. They were also instructed to "imagine a circle" around their head.
Brown said the stunt would work if people were open to it.
Afterwards, several audience members, who watched the film on a giant screen, said they could not stand up.
And a series of viewers called the show telling of their "bizarre" feelings of being "stuck".
"I can't feel my legs," said one audience member.
Another said: "It's just very bizarre. I'm trying hard to get up but I can't."
One viewer said: "I feel like the bottom of my back is wielded to my sofa."
Brown, who assured the trick had no side effects, then played a "clearing tone" that he said would "free" those left stricken.
He said the stunt worked through suggestion.
Earlier, he was shown transformed into a beggar in an attempt to influence how much people donated.
Brown, who placed subliminal messages around a shopping centre, managed to persuade passers-by to donate £350 (€387.29) in less than an hour.
One man even gave Brown his shoes.
All the money Brown collected was donated to homeless charity Shelter.
As a finale to his series, Brown is hoping to make a viewer win a fortune at a casino by gambling on a roulette wheel.