A game of relationships and values, that happens to have some trappings of superheroes. It could also work well for long-form dramas, such as the rebooted Battlestar Galactica.
Many resources for the game are at Somethingville. You can also pick up a Conflict flowchart, a dice rolling flowchart, and a general cheat sheet. Neil Smith also created a contest flowchart and dice rolling summary.