Animated projects with star-studded voice casts are par for the course. We see Despicable Me to hear Steve Carell, Incredibles 2 to hear Holly Hunter, and Shark Tale to hear Martin Scorsese. (Actually, if anyone's watching Shark Tale to hear Martin Scorsese, their life is not going so good, fella.) But there are still many surprising voice actors. I mean famous people hiding within many of the cartoons and animated films you've loved for years and years. In other words, some of your favorite actors have also played your favorite cartoon characters. And you never even knew it. But now you will.