Grinders was released through documentary filmmaker Journeyman Pictures, and it features filmmaker Matt Gallagher doing what people really, really shouldn’t: Jumping right into poker playing to see if his winnings would be enough to support his wife and child. Here are Alex’s picks for some of the best poker documentaries out there. With poker, sometimes it’s all about watching the game, and nobody’s ever said that you can’t fill up some of those hours by watching some movies about poker. They say it takes 10, 000 hours to become adept in any field.