'The Man Who Fell to Earth' review: Chiwetel Ejiofor and Naomie Harris shine in smart sci-fi series

Stop me if you've heard this one before: An alien arrives alone on Earth and learns about human culture. Along the way, they befriend a human or two and have to hide from dangerous government forces. Sounds familiar, right? I could be talking about anything from E.T. to The Iron Giant. Instead, I'm thinking of Showtime's new...