People making games beware: Scrabble vowel shortage revealed, thanks to faulty pseudorandomness. Also a tasty morsel of Scrabble trivia:
Alfred Butts invented Scrabble in 1931 after studying the front page of the New York Times for months to calculate how often each of the 26 letters in the Roman alphabet is used in English words. He settled on an appropriate score and number of tiles for each letter. There are 12 copies of E, the most common letter, and it has a value of 1; there is only one Z, but it has a value of 10.