This is unscripted hilarity at its finest! Welcome to WatchMojo, and today we're counting down our picks for the best sitcom moments that were totally off the cuff and totally hilarious. Our countdown includes scenes from "Seinfeld", "Friends", "It's Always Sunny in Philadelphia", "Community", "Modern Family", and more! read more...
Top 20 Funniest Improvised Sitcom Moments
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VOICE OVER: Rebecca Brayton
WRITTEN BY: Kim Dionne
