Oscar-winner Kevin Spacey talks about his new Shakespeare documentary, life in the theater and why he's 'nuts'
Why would an A-list celebrity sweat through a 10-month international tour headlining "Richard III," one of the most emotionally and physically demanding roles ever written for the theater? (The original Tricky Dick is Shakespeare's most popular and chatty villain -- in the Bard's canon, only Hamlet has more lines.) Kevin Spacey provides the answer in his new documentary "Now: In the Wings on a World St…