Robert Downey Jr has unearthed a scam at the New York Stock Exchange after he was invited to ring the famous bell to open the day's trading - the bell rings itself.
The actor joined the traders on Wall Street on Tuesday, while in Manhattan promoting his new movie 'Iron Man'.
Downey Jr was thrilled with the honour - but distraught to discover his part was only for show.
He says: "Fancy that. Me starting global finance. I've come a long way. At 9.29 and 50 seconds, I had to ring the bell. But before I hit the button, the bell started ringing anyway. It's pre-rigged in case anyone is retarded or hammered - the finance world doesn't fall apart."