No. 174.

Simon Cowell didn't want anyone to know it was his 52nd birthday, so Cheryl Cole hired a plane to fly around his house, trailing a banner behind it congratulating him on the occasion.

(Source: The Graham Norton Show.)

No. 74.

Ducks only lay eggs in the morning.

(Source: BBC Radio 2 Factoids Twitter feed.)

No. 13.

Stephen Hawking was born exactly three hundred years after Galileo, who is often hailed as the father of modern physics, died.

(Source: Radio 4's Dear Professor Hawking.)