It’s easy to just think of comedians as their on-stage personas, but they are so much more than that. In fact, it's often their fascinating backgrounds and intriguing experiences that help them to create the material we find most hilarious.
Find out 13 things you (probably) didn't know about Mel Brooks, John Cleese, Ellen Degeneres and more below, and tell us what surprised you the most in the comments.
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