But to get to the top 25 quicker, let's list the rest of the runners-up.
Sweeney Todd: The Demon Barbar of Fleet Street
Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan
Dancer in the Dark
Kiss Kiss Bang Bang
Million Dollar Baby
A History of Violence
The Life Aquatic with Steve Zissou
While Gus Van Sant's Elephant won the Palme d'Or at Cannes, I think this film is better. This story of a teenage skateboarder who commits manslaughter is absolutely mesmerizing to watch. With films like this and the riveting Milk, Van Sant has transcended from mere film director into a true artist.
Children of Men
The Tao of Steve
A movie that theorizes that all guys named Steve are awesome. I can't understand why I would want to include it here.
Oh, so greatly under appreciated. Though it lacks the unique magic of Ivan Reitman's earlier movie Ghostbusters, which it closely resembles, Evolution is none the less a really fun movie to watch.
No Country for Old Men
Stranger Than Fiction
A.I. Artificial Intelligence
Bowling for Columbine
Requiem for a Dream
In the Loop
V for Vendetta
Lost in Translation
Anchorman: The Legend of Ron Burgundy
Observe and Report
The Bourne Trilogy (The Bourne Identity; The Bourne Supremacy; The Bourne Ultimatum)
The 40-Year-Old Virgin
But avoid Brett Ratner's dog turd of a sequel, X-Men: The Last Stand.
Best in Show
What Planet Are You From?
As good as Bennett Miller's Capote was, Douglas McGrath's take on Truman Capote's efforts to write In Cold Blood was actually better. Philip Seymour Hoffman took home an Oscar, but Toby Jones was born to play the role. If this film had made it to theaters first, Hoffman would probably still be waiting for an Oscar.
The Perfect Storm
Kill Bill, Vol. 1 & 2