No. 168.

Vampires suffer from arithmomania - they are obsessed with counting. Consequently, you could sufficiently distract them by throwing a pile of seeds in front of them.

(Source: http://www.telegraph.co.uk/culture/qi/9312067/QI-Quite-interesting-facts-about-vampires.html.)

No. 160.

Tequila is made from a cactus-like plant.

(Source: Friend told me.Verified by Wikipedia.)

No. 133.

There has been no scientific experiment to prove the existence of time.

(Source: QIkipedia Twitter feed.)

No. 122.

Albert Brooks's real name is Albert Einstein.

(Source: http://www.totalfilm.com/features/50-geekiest-movie-facts/cameo-a-go-go)

No. 118.

In the first draft of Back to the Future, the time travel device was a fridge.

(Source: Today Show interview with the cast.)

No. 117.

Tom Conti is directly related to Napoleon. One of his ancestors was Giovanni Buonaparte, who established the family line that produced Napoleon.

(Source: http://www.guardian.co.uk/science/2012/apr/14/tom-conti-napoleon-bonaparte-genes)

No. 115.

The E number of gold is E175.

(Source: Twitter feed QIkipedia.)

No. 109.

To make a jar of congealed honey runny again, simply put it in a bowl of warm water for a few minutes.

(Source: Mother's tip via Good Housekeeping.)

No. 107.

Kaley Cuoco got turned down twice for the role of Penny in The Big Bang Theory before finally getting the part upon a third audition.

(Source: The Big Bang Theory: It all started with a Big Bang, an E4 behind the scenes look at the show.)

No. 95.

If you see a rainbow, you have your back to the sun.

(Source: Twitter feed of BBC Radio 2 Factoids.)

No. 20.

Kangaroos have three vaginas and two wombs.

(Source: QI, episode 2.6 Beavers.)

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.)