You can buy a completely renovated and converted Boeing 727 jet that accommodates 23 people for less than the cost of a Ferrari.
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".
Dr. Seuss wrote Green Eggs and Ham as part of a bet.