1. Collateral
2. Kill Bill Vol 2
3. Hero
The Bourne Supremacy was pretty sweet, but I don't really think it's all that memorable. I've probably seen 20-30 films in theater this year, but most were either bad or not memorable. The Manchurian Candidate might be worth mentioning, but I'm still not sure about the ending.
I haven't had the time or opportunity to see the following yet, but they're films I think I'd particularly enjoy: Twilight Samurai, Zatoichi, Garden State, Mean Creek and Eternal Sunshine of the Spotless Mind.