Jack Kirby: One Panel
There's this one panel from Tales of Asgard that really sums up everything about Kirby to me.
It's Knorda, the Normal-Sized Queen of the Mountain Giants*. She appears in one episode of Tales of Asgard, back in Journey into Mystery #109. But what she epitomises to me is how much Kirby cared about his work. He could create comics at a rate almost unheard of today, and yet even throwaway characters who only appear in a couple of panels, like Knorda, have their own style and personality.
*Yes, I know I've posted this panel before. I really like it.