Since we've just had the second live-action adaptation of the Dark Phoenix saga, I've been thinking about how many comic-book stories have been adapted and what's left over. We've had a lot, sometimes very loosely based on the comic. The Infinity Gauntlet, Doomsday, Civil War, Age of Ultron, and so on. Years ago someone was talking about the X-Men movies and how they should adapt the Kree-Skrull War. I thought that was ridiculous at the time, but we got that back in February, more or less. So what else is available to be adapted? It should be a specific superhero comic story, widely recognised as good or popular that hasn't been adapted in live action before. I assume almost everything has been used in animation. It doesn't need to involve characters that have already appeared, or even be from Marvel or DC.