It's no secret that The Simpsons has been one of the most intelligent comedies on the air for over two decades now, but did you know that some of the creators on the show are also stone cold gambling junkies? In this exclusive clip from the documentary All In: The Poker Movie, Simpsons co-creator Sam Simon tells a story about how the crew's knowledge of gambling was actually the basis for one of the series' more memorable episodes, "Lisa the Greek."

All In: The Poker Movie is a documentary written and directed by Douglas Tirola that chronicles the worldwide poker boom that has swept the globe. It features interviews and insight from some of the world's most prominent professional poker players and celebrity players such as Matt Damon, Kenny Rogers, Ira Glass, Phil Hellmuth, Chris Ferguson, and the late Bert Sugar.

To get more information on the film, you can follow it on Facebook and Twitter, or you could purchase it right now from iTunes. Also, be sure to also check out the movie's official website for even more background on it.