With Joel Kinnaman, Gary Oldman, Samuel L. Jackson and Abbie Cornish all set to be a part of the remake of the 1987 cult classic "Robocop," MGM announced late Wednesday that Michael Keaton would be joining the cast as well. Keaton, known partially for his turn as Batman in the 1990s, will play Raymond Sellars, the CEO of the company that builds Robocop. The movie is set for release in August 2013.