Kline was fantastic in this movie as were Sarandon, Rickman, Keitel and Steiger and Aiello. It was an amazing cast and Kline really pulled these talents all together. He was an amazing linchpin that held the ensemble together, not that Rickman needed it, as he was hilarious in the role of Klines Bohemian painter neighbor. He literally stole scenes in that role.
You have to see this movie if you haven't already. This, Dave and In & Out are Klines best works.