Eddie Redmayne has won the Best Actor Oscar for his indelible portrayal of Stephen Hawking in “The Theory of Everything” in one of the competitive races at Sunday’s Academy Awards. Redmayne won over Michael Keaton for “Birdman,” Steve Carrell for “Foxcatcher,” Benedict Cumberbatch for “The Imitation Game” and Bradley Cooper for “American Sniper.” Both Redmayne...