My favorite scene, and it's an absolute masterclass in comedic technique, is from Woody Allen's Everything You Always Wanted to Know About Sex. The moment his Greek patient confesses: "Doctor, I'm in love with a sheep!" Without saying a single word, Wilder's expression goes from jesting to confusion to amusement to fright to intrigue and back again through the entire gamut of possible human response. He sputters and strains. It's all right there on his face! We feel the tortured struggle occurring within his mind, grasping for any semblance of assessing the situation and formulating the appropriate thing to say. It's truth is it's genius!