Hulk No. 1 (1962)
The very first cover of the Hulk's very first appearance is a classic of dramatic exposition and icon creation. Jack Kirby's cover tells the story of Banner's transformation and dazzles us with that chunky, iconic title logo. It also spells out the character's enduring theme in a singe phrase: ''Is he man or monster or ... is he both?'' Replace ''man'' with ''hero'' and you get the premise of my entire Hulk run from Planet Hulk onward. There’s been many homages to the cover, notably with Hulk No. 393 and No. 474 and She-Hulk No. 1 in 1979.