For some, Joss Whedon can do no wrong. The creator of Buffy the Vampire Slayer, Angel and Firefly has a hardcore fan base that has loved much of the work his done behind the camera. In addition to writing films like Cabin in the Woods, Whedon has directed episodes of Buffy, Angel and Firefly and the film Serenity.
But it doesn't compare to Christopher Nolan. Nolan has created a series of unforgettable films over the past dozen years. From 2000's Memento to 2008's The Dark Knight to 2010's Inception, this director has created several masterful works. He knows how to develop strong stories, use special effects smartly, and show viewers a great time at the theater. That ability can't be under-estimated.