one of my favorite movies, collateral has a sense of creativity to it and doesn't rely on action scenes so bombastic that they break you're brain after two minutes.
this is one of the most perfectly directed movies I've ever seen. there's no shaky cam and during the handheld shootout scene in the nightclub, you can see what's going on perfectly.
the dialogue is FLAWLESS. there's not a boring and/or unnecessary scene in this movie. this movie also marks the only time I felt bad for the bad guy when he dies and from the way the scene is shot and the use of the score, it seems like your supposed to feel that way.
it's an instant classic with no flaws to be found.