Mr Gill decided to take on an Ultra Marathon because it was "a little bit stupid".

BBC: Simon Gill

Instead, it's just a bit of grandstanding thrown in, apparently to show how brave and macho -- or stupid, or insane -- Cruise and Woo can be.

CNN: 'Mission: Impossible 2': A hero, a babe, a motorcycle

The real Van Praag likes to call members of the financial press stupid, so it might not come as a surprise that he brought a bit of this onto himself.

FORBES: Pranking Goldman's Lucas Van Praag