Can't believe no one has tagged @LesGrossman yet.
Tropic Thunder definitely belongs and I think I'd take it by a cunthair over Step Brothers for the year's comedy title. Hell of a pair.
But The Dark Knight was essentially* flawless. From the opening scene to the interrogation room to the car chase to Harvey Dent to Joker in a nursing uniform, there's just brilliance from start to finish.
Incredibly quotable for a comic book film as well. "Why so serious?" "You either die a hero, or you live long enough to see yourself become the villain." "What doesn't kill you simply makes you stranger." "Some men just want to watch the world burn." "The hero we deserve but not the hero we need." Comic book movies aren't particularly quotable but this one crushed it with a collection of great quotes, and from essentially all the key characters too.
*Only complaint was Gillenhall is a wholly unconvincing love interest for an egotistical billionaire. Katie Holmes was far superior. But the movie is so good and the love interest angle so insignificant that it didn't matter.
Agree on the Gillenhall-Holmes matter. I barwly noticed when Rachel died because I had stopped caring.
Truth is that I think Holmes is a shit actress but fits the part, while Gillenhall is a good one who doesn't.