1. There Will Be Blood
2. The Fabelmans
3. Gangs of New York
4. Memento
5. The Dark Knight

This is an incredibly difficult question for me, so I have to list my runners up:

• The Prestige
• Shawshank Redemption
• Pulp Fiction
• Spirited Away
• 2001: A Space Oddysey
• Dallas Buyers Club

I'm probably an idiot for not including The Godfather but it's been a long time since I saw it so I probably need to watch it again.