Introducing “One Flew Over the Cuckoo’s Nest,” the curtain-raiser at this year’s Lumière Film Festival in Lyon where he is guest of honor, Sean Penn gave an emotional speech about his friend, the film’s lead actor Jack Nicholson .  “I heard my name a lot tonight,” he said. “But I’ve been very comfortable with it in the sense that knowing “Cuckoo’s Nest” was going to play, there was no question I was going to be able to find great humility under the circumstances. One of the great, magic moments