Stumbled upon this list today, not so much the best films just the top ten that seem the most important or relevant in the long haul. The list is chronological btw. 

1. Crouching Tiger, Hidden Dragon (2000) 
2. City of God (2002) 
3. Lost in Translation (2003) 
4. The Lord of the Rings: The Return of the King (2003) 
5. Fahrenheit 9/11 (2004) 
6. Eternal Sunshine of the Spotless Mind (2004) 
7. Brokeback Mountain (2005) 
8. Caché (2005) 
9. Borat (2006) 
10. There Will Be Blood (2008)