What it is: Lucy Walker's 2002 documentary, "Devil's Playground," gives the public a rare glimpse into the closed world of the Amish, a strict religious sect that forbids the use of electricity, cars and most other modern conveniences. What it's all about: If you've been sucked into UPN's new fish-out-of-water reality show "Amish in the City," you're familiar with the Amish tradition of rumspringa. From the Pennsylvania Dutch word for "running around," rumspringa is a period of self-discovery given to Amish young people, beginning at age 16 and lasting until they decide to formally join the church (or reject the Amish way of life altogether). During rumspringa, Amish teenagers can indulge in normally verboten behaviors – driving cars, drinking alcohol, listening to music, watching TV. Amish youth generally stay closer to home during rumspringa, oftentimes remaining on their family farm during their "running around" period.