For the upcoming documentary I Know That Voice , the voices of our most beloved cartoon characters are finally stepping out of the sound booth to show you what their career is really like.

Kevin Conroy (Batman), Billy West (Fry, Dr. Zoidberg, Professor Farnsworth), John Di Maggio (Bender) and 94-year-old industry legend June Foray (Rocky and Natasha from Rocky and Bullwinkle) have come together to discuss their craft.

The trailer looks riveting, especially when they start talking about discovering the rhythm behind each character. Let's hope some Simpsons voice actors drop by to elaborate on the joys of printing their own money. No release date is currently set, but we'll keep you posted.