1. Heart of Darkness / Apocalypse Now
  2. Do Androids Dream of Electric Sheep? / Blade Runner
  3. We Can Remember It For You Wholesale / Total Recall
    The Schwarzenegger version. A cheesy romp.
  4. On the Trail of the Assassins / JFK
  5. Who Goes there? / The Thing
    The 80s Kurt Russell version
  6. 2001: A Space Odyssey
    One of the rare cases where the movie came first
  7. The Running Man
  8. The Princess Bride
  9. The Lord of the Rings
    Except for the movie Gollum
  10. Fearless
  11. Amadeus
  12. Six Degrees of Separation
  13. The Orchid Thief by @susanorlean / Adaptation
    Such an amazing book and the movie took a really unique approach to the adaptation
    Suggested by @jentin