In 2004, the Guinness World Records book entered its own name in the book as the World's bestselling copyright book. To commemorate this momentous achievement, the company established a Guinness World Record Day - A 24-hour period during which people from all over the world can try break their own records. On November 15th, over 420,000 people took up the challenge and as you have probably guessed the record attempts ranged from simply amazing to downright wacky.