What does it take to get Al Pacino, Susan Sarandon, and Barry Levinson together for an HBO movie? Only the story of Jack "Doctor Death" Kervorkian.

'You Don't Know Jack,' premiering on Saturday, April 24 at 9PM ET, chronicles the period when Dr. Kervorkian was helping terminally ill patients commit suicide. This includes the 1998 incident where he assisted a patient with ALS and sent the video to '60 Minutes,' which landed him in prison for eight years.

In addition to Pacino, who plays Kervorkian, and Sarandon, who plays his friend and euthanasia advocate Jane Good, the movie also stars John Goodman, Brenda Vaccaro and Danny Huston. Levinson, seen above with Pacino and Kervorkian, produced and directed the movie, the first time he's directed a feature-length movie for television.

The director of 'Rain Man,' 'Good Morning, Vietnam,' 'Wag The Dog,' and other classics spoke to me earlier this week about dealing with the touchy topic of Kervorkian, working with a pro like Pacino, and whether a movie like 'Diner' could ever be made today. His answer to that one is surprising.