Recycled stories

You know, they're running out of superheroes to make movies about. First it was Superman. Then Batman. Then Spiderman. The X-Men got put in there. Now there's the Fantastic 4. Are these movies going to get increasingly obscure until we have no idea who these people are supposed to be? We're even to the point of remaking radio shows (like War of the Worlds). Are there no more original ideas out there for movies? They say there's only seven stories out there at all.