Mel Gibson scared by the unknown

If it's puzzling or unnerving then Mel Gibson is instantly interested - which is why he was drawn to his latest movie.

In Signs, a white-knuckle tale set around crop circles, he plays Pennsylvania farmer and former preacher Graham Hess who wakens up one morning to find a circle cut into his cornfield. At first he dismisses it as a prank - until strange, puzzling and unnerving things start to happen, to man and beast!