Hollywood is full of talented actors. It even has a relatively impressive pool of critically acclaimed Oscar or Golden Globe nominees under the age of 45 who bring some star power to the box office. The problem is, quite a few have already appeared as Marvel or DC Comics characters. And those that are left (Matt Damon, Leonardo DiCaprio, Brad Pitt, Jude Law, Will Smith) have shown little inclination for wanting to put on superhero spandex (let alone appear in a cameo role). That leaves names such as Jake Gyllenhall, Mark Wahlberg, Casey Affleck, Adrien Brody on the men's side. The ladies have more options, but it will all depend on who makes the "team." Yes, Marvel cast a relative unknown in Hemsworth as Thor, and Evans hasn't reached the critical level of his peers Downey, Jr., Jackson, Ruffalo, Renner and Johansson, but DC has to make sure they don't make the JL just a group of up and comers like Cavill.