Richard Kelly is about to enter another dimension, a dimension not only of sight and sound but of mind, as the Donnie Darko director is developing a biopic of The Twilight Zone creator Rod Serling that aims to go into production next year, Collider has confirmed. Jason Michael Berman is producing via Mandalay Pictures along with Kevin Turen, Matthew Lindner and Kelly's manager, Brian Young. Kelly is writing the screenplay himself, and should the project actually go before cameras, it would serve as the Southland Tales director's fourth feature, as well as his first since the Cameron Diaz-…