Bill Nye is perhaps best known for the zany persona he cultivated for years as a science educator — always filled with cheer for the subject matter at hand. But that fun zaniness disappears in the new documentary Bill Nye: Science Guy in a moment bound to send a chill up the spine of anyone who believes that American students should learn basic science. In the film, Nye confronts famed creationist Ken Ham as he undercuts evolution in a conversation with an elementary school-age child at Kentucky's Creation Museum.