Terry Gross

Actor Irrfan Khan talks about his role in the new movie Life of Pi, directed by Ang Lee and based on the best-selling novel of the same name. Khan also starred in Slumdog Millionaire, The Namesake and A Mighty Heart.

Tony Kushner wrote the screenplay for the film Lincoln, which focuses on the 16th president's tumultuous final months in office. Kushner read more than 20 books before writing about Lincoln, a man who had "an enormous capacity for grief that didn't deprive him of the ability to act."

In her memoir, Susannah Cahalan writes about the month she descended into madness, experiencing seizures, paranoia, psychosis and catatonia. At first, her family was frightened, and her doctors, baffled. The eventual prognosis? A rare autoimmune disease that was attacking her brain.