Best friend in movie history

So many options...
  1. Sam Wise Gamgee
    Of course
  2. Benny "the Jet" Rodriguez
    Completely selfless and kind
  3. Bill S Preston Esquire and Ted Theodore Logan
    Equally good best friends to each other
  4. Inigo Montoya and Fezzik
    "Anybody want a peanut?"
  5. Cameron Frye
    Suggested by   @emilyrose