User blog comment:TheUnknown285/A very interesting image from the remake of Halo (yes, this is ME-related)/@comment-3546663-20120403005440/@comment-30303790-20120404173935

And John has been a standard name for action heroes or people important in the movies and such:
 * John Conner - Terminator
 * John Rambo - Rambo
 * John McLane - Die Hard
 * John Matrix - Commando

John has represented the hero in countless other movies, games, and books. Just do a search for it and you'll be amazed how many iconic series have had their heroes named John. Even in the last few weeks another film has shown up - John Carter.

And its more than just shoot 'em ups too. Dear John, even has John in the title of the movie, and its not a shooter...as far as I know.

Here's a link to some others: http://www.buzzfeed.com/donnad/20-movie-characters-named-john