"Robin... was afraid Bobby [De Niro] was going to blow him off the screen."

"I said, ‘I won’t let that happen.’ So it was my job to keep Robin from being funny. We had a shorthand signal for when he got a little flamboyant, improvising," said Penny Marshall, the director of "Awakenings."

She curled her fingers tight and dropped the fist to her groin: “It meant ‘More balls.’ ”