Some actors promote their movies with talk show appearances, others with lengthy press junkets, and still others with multiple red carpet premieres around the world. This week, to promote his new film Mr. Holmes, Sir Ian McKellen decided to go a different route and plug the flick with a dramatic reading of lyrics from Taylor Swift’s “Bad Blood” and Mark Ronson and Bruno Mars’ “Uptown Funk.” We can only hope that, next time he has a movie out, Sir Ian opts for Nicki Minaj’s “Anaconda.”