Why the 'Comedy' tag?
It seems every film just throws in the comedy tag just because they can - this is a mistake, a lot of people skip a film because when they see comedy they think of Adam Sandler making turd jokes.
Burn After Reading is definitely NOT a comedy. It's funny, but it's not TRYING to be funny. It's simply funny because of how it is, not because it's made into a comedy.
If we start putting everything with a laugh or smile into comedy tag then we're gonna see Titanic in comedy eventually.