An apercu is a brief, clever review or summation of something. If your synopsis of last week's episode of your favorite TV show is funny and sharp, you can call it an apercu.
Sometimes an apercu is simply a witty comment or a clever anecdote: "He is so fun at parties because he always comes up with such brilliant apercus." The word is often spelled with a cedilla, a French accent that softens the C so that it's pronounced like an S: aperçu. The word is from the French apercevoir, "to perceive."