Stacker took the top films of 2020, according to an aggregate Stacker score, and went digging for mistakes. The data source, Stacker's " 100 best movies of 2020," went right up through December 2020.

Welcome to WatchMojo, and today we’re counting down our picks for the most hilarious bloopers in films that were retained in the final cut.

Some of the greatest movie moments weren’t even scripted—crazy, right? From a chilling Joker clap to Thor's unexpected comedy, these on-set accidents turned into unforgettable scenes. Discover ...