* OlderThanTheyThink: 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.