The Wachowskis' Plastic Man

Before striking it big with The Matrix (and then ruining it with the sequels), The Wachowskis penned the script for a Plastic Man movie in 1995. And they said that it was the funniest script they could have written. There were certain changes made to the character (such as his name and origin: Daniel O'Brien, rather than Patrick O'Brien; and an eco-terrorist, rather than a con man turned good). But it was kid-friendly, so, in all likelihood, it would have been successful).

Bryan Spicer (who directed only TV shows until then) was attached to direct. However, he rewrote part of the script, and it ended up completely different from what the Wachowskis had written. Eventually, the project was dropped.

Nonetheless, rumor has it that the same duo picked it up again in 2008 (after they bombed with Speed Racer), with Keanu Reeves set to star. The Matrix actor denied these reports, and nothing’s been heard since.

Of course, would this have been a movie to see? Maybe, maybe not "“ but it was certainly supposed to be something unique among superhero flicks, given the comic book character the writers chose.