The Origin of Sideshow Bob
When the dour, cultured sideman to Krusty the Clown finally found his voice, actor Kelsey Grammer gave it to him. A former writer on Cheers began working on The Simpsons, and Kelsey took to hanging around the set, oftentimes to sing songs. Sideshow Bob finally ditched his silent act, and Mr. Grammer had been harboring the perfect voice for years.