In the mid-80s, everybody was trying to cash in on the He-Man money train. One of the more interesting attempts was Blackstar, based on a cartoon that actually aired before the adventures of Prince Adam went into production. It's an awesome sci-fi story - astronaut John Blackstar gets swept through a black hole to the planet Sagar, where he must contend with the dictatorial Overlord and learn to master the power of the Starsword. With insane supporting characters and epic battles, this could work well in today's movie climate.