Ian McKellen, the venerable actor who plays Gandalf in Peter Jackson's Lord of the Rings films, told fans on his official Web site that he might consider appearing in a movie version of J.R.R. Tolkien's The Hobbit. In response to a fan question, McKellen wrote, "I recently asked about the film rights to The Hobbit, which seem to be somewhat controlled by Peter Jackson, as far as I can tell. I hope that's the case, because obviously he should have first refusal at translating the novel into a movie." McKellen added, "I should be intrigued to return to Middle-earth, even...