If you take all the letters from the word "wizard" and swap them with opposite letters (a->z, b->y), it spells wizard backwards.
Following the release of Rocky IV, a joke was making rounds in Hollywood. Since Rocky had run out of opponents, he would have to fight an alien if a fifth movie was made. Jim and John Thomas took the joke seriously and wrote a screenplay based on it, which later became the movie "Predator".
In 1945, Dwight D. Eisenhower predicted that people would try to dispel the holocaust as a falsehood, and ordered all possible photographs taken of the Nazi crimes to hinder any such attempts.