Final answer:
The movie with the smallest real box office receipts is 'Zyzzyx Road'.
Step-by-step explanation:
The movie with the smallest real box office receipts is the 2006 film 'Zyzzyx Road'. It had a total box office gross of just $30, making it the lowest grossing movie of all time. The film was only released in one theater for a week and starred actors Tom Sizemore and Katherine Heigl.