There was an effect he performed...a card effect...I believe it was to johnathon Ross, though I can't remember for certain.
He got him and his missus to shuffle a deck under a table, take a card out, reverse and replace, and shuffle, before revealing that both cards were the same.
I know the card was a mental force when she decided it...but I don't know how he managed to get both to pick them (without using a one way deck

is this available anywhere, does anybody know?