Diane Keaton's famous friends are opening up about her public appearances in the months before her death. Keaton's longtime pal and Book Club costar Ed Begley Jr. recalled one of their final interactions, which happened to involve Jack Nicholson. "I saw her fairly recently at Jack Nicholson's birthday party, and it was good to see her there," Begley Jr., 76, told People on Saturday, October 11. "She loved Jack Nicholson, as I do, and Jack loved her. So I don't mean to speak for him. I'm sure he's as devastated as I am by her loss." News broke of Keaton's death on Saturday.