Batman: The Dark Knight Returns

the long version

If any comic has a claim to have truly reinvigorated the genre, then The Dark Knight Returns by Frank Miller--known also for his excellent Sin City series and his superb rendering of the blind superhero Daredevil--is probably the top contender. Batman represented all that was wrong in comics and Miller set himself a tough task taking on the camp crusader and turning this laughable, innocuous children's cartoon character into a hero for our times. The great Alan Moore (V for Vendetta, Swamp Thing