I'm no where near qualified enough in a technical sense to say which movies were the best. However, for me, when looking at script, acting, cinematography & entertainment:
1. Mad Max: Tremendous beauty with how it was filmed. Extraordinarily entertaining & creative. Very well acted overall and well written.
2. Birdman: Original. Amazing cast & really well done.
3. Creed: Great script, perfect casting and great humanizing element.
4. Whiplash: Best acted movie I saw this year plus a really tight script.
5. The Imitation Game: Very emotional, gripping and enfuriating at the same time.
Have not seen: The Martian, The Revenant, The Big Short or Bridge of Spies (want to see them all).