Planetary is a comic book series whose odd name disguises an exceptional piece of fiction. It is about a group of 3 covert superheroes who investigate the hidden wonders and superhero mythology of the 20th century. Written by Warren Ellis of 'Transmetropolitan' fame, and artist John Cassady, the strength of this series comes from their ability to tell a gripping yet self-contained story in each issue, each of which contributes to an overall story-arc.
There are no throw-away lines, unintentional references or even stilted plot explanations- the action and narrative proceeds smoothly and naturally.