Jim's Law of Movies

Jim's Law of Movies is this:

Any movie with a monkey in it benefits from having that monkey.

Some excellent examples:

• Raiders of the Lost Arc. Remember the monkey that ate
  Indy's date and died, and that's how they knew they were poisoned?
  Wouldn't it be a worse movie without this scene? Yes.
  
  
• The Fountain. The medical researcher is doing research on
  a monkey to try to cure something. A definite positive addition to
  the film.
  
  
• Pirates of the Carribean. The monkey's name was Jack
  too. Very funny.
  
  
• Strange Brew. This movie had no monkey, and therefore did
  not benefit from having a monkey, following Jim's Law of
  Movies. The law does not state that any movie would benefit
  from having a monkey, only movies that have a monkey. If you
  thought the law meant the former, you made a logical error when you
  read the law.