Brian Stokes Mitchell is at the top of the acting game in New York. “No other actor can match his singing voice. No other singer can claim his acting range or experience. No other man — at least, no one who works in the theater regularly — can say, ‘I want to play Don Quixote in Man of La Mancha’ and bring it about. Mr. Mitchell has reached a rare perch in the American theater: he can make his dreams come true with other people’s money.”