OK, I'm finally ready:
1. Oldboy
2. Eternal Sunshine of the Spotless Mind
3. Wall-E
4. Kill Bill 1 & 2
5. No Country for Old Men
6. Pan's Labyrinth
7. Gone Baby Gone
8. Man on Wire
9. The Chaser
10. Donnie Darko
Honorable Mentions (i.e., could be swapped out with #10 on any given day):
Amelie, Shaun of the Dead, Kiss Kiss Bang Bang, My Sassy Girl, Sympathy for Mr. Vengeance, The Dark Knight, Memento, The Life Aquatic, District 9, Adaptation