On Judy Garland's first day on the set of Stanley Kramer's "Judgment at Nuremberg" (1961), which was her first onscreen appearance since "A Star is Born" (1954), the cast and crew greeted her with warm and lasting applause. It was a welcome return to films for her, and her mood was further elevated by the lower pressure of acting in a cameo, rather than carrying a picture as she had done in almost every film she made since childhood.
Her joyful attitude made it difficult for her to perform her dark emotional scenes. "Damn it, Stanley, I can't do it. I've dried up. I'm too happy to cry," she said. Kramer gave her a ten-minute break before continuing to great effect. "There's nobody in the entertainment world today, actor or singer, who can run the complete range of emotions, from utter pathos to power...the way she can," Kramer said.
("Behind the Camera - Judgment at Nuremberg", Rob Nixon, TCM, 2010)
P.S: Remembering the great Judy Garland on her 104th birthday!