There is something so cool about seeing the actors behind your favorite cartoon characters. This video features the voices behind Bender, Rocky the Flying Squirrel, Bubbles, video game voices, and a magnitude of others. It's from a new documentary, 'I Know That Voice' which features the stories of some of the best voice talents from both the past and today.

If you sit through the credits of most cartoons, you'll end up seeing the same names from show to show and you'll see one person doing multiple voices in the same episode.  Voice actors really are underrated artists, and the documentary 'I Know That Voice' gives a look at the process, people, and results of voice over work.  'I Know That Voice' will be released in 2013.