No. 254.

Princess Anne was the only person not be gender-tested at the 1976 Olympics.

(Source: http://www.telegraph.co.uk/culture/qi/9472902/QI-Quite-interesting-facts-about-the-Olympics.html.)

No. 150.

During a screening of Ali, Prince Charles was tapped on the shoulder in order to know when to bow his head to avoid watching a sex scene.

(Source: The Graham Norton Show.)