One of the most anticipated performances in “The Hobbit: An Unexpected Journey” is Sylvester McCoy’s turn as the wizard Radagast the Brown. Though the character did not appear in Peter Jackson’s “The Lord of the Rings” trilogy, Radagast is a key player in J.R.R. Tolkien’s books. McCoy, who has been acting on the stage and screen for more than 45 years, joined “The Hobbit” after finishing a Royal Shakespeare Company tour of “King Lear,” acting opposite Gandalf actor Ian McKellen. McCoy is perhaps best known for his role in “Doctor Who.” Hero Complex chatted with McCoy about wizards and Timelords.