* OlderThanTheyThink: Creator/StanLee wasn't the one who originated the creator cameo appearances in live action Marvel adaptations. Kirby beat him to it. He appeared in a 1977 episode of TheIncredibleHulk TV series. He was a police sketch artist drawing a witnesses description of the Hulk. Naturally, Kirby's drawing looked more like his version than Lou Ferrigno. Stan Lee didn't get his chance until 1989's Trial of the Incredible Hulk.
* TooGoodToLast: Most of his DC work. It was one of the main reasons he left the company, as his promising books kept getting cancelled while comparatively mediocre ones survived.
* WhatCouldHaveBeen:
** Kirby started designing the New Gods in the late '60s at Marvel, where they would have been a post-Ragnarok continuation of Thor. What's less well-known is that OMAC started life as a Captain-America-in-the-future pitch.
** During TheSeventies, Kirby was the conceptual art designer for an aborted attempt to produce a film based on Roger Zelazny's 1967 novel ''Literature/LordOfLight''. His art was later re-used for the [[Film/{{Argo}} CIA's fake movie "Argo"]]. He even gets a split-second cameo in the film! (The art actually seen in the film, however, isn't his, or even much like it.)
** Kirby produced the first 17 pages of an adaptation of one of his favourite series, Patrick [=McGoohan's=] ''Series/ThePrisoner''. Unfortunately, the series never materialised, but [[http://www.theredcircle.com/blog/2009/11/15/jkirby-tprsnr/ some art can be found online.]]