Mr. and Mrs. Smith

Photo: Twentieth Century Fox

8 of 9
Mr. and Mrs. Smith
The best onscreen chemistry can't be faked, and the spark between Brad Pitt and Angelina Jolie—or Brangelina, as they came to be known—was a scorcher from the movie's first five minutes. As married assassins trying to kill each other, John and Jane embark on a cat-and-mouse chase that gets pretty heated. As does their unforgettable tango that doubles as a pat-down.