Morgan Freeman has one of the most famous and recognizable celebrity voices. Whether he's acting or narrating, you always know it's Morgan. On a recent visit to The Tonight Show with Jimmy Fallon, Jimmy convinced Freeman to let us hear his voice...chipmunks style!

Watch and listen as Morgan Freeman inhales helium from balloon on Jimmy Fallon's show. It's hilarious. Imagine March of the Penguins narrated by this voice!