When Grey Gardens opened at the Walter Kerr Theatre in 2006, it established itself as the only Broadway show ever based on a documentary. Winning Tony awards for its stars Christine Ebersole and Mary Louise Wilson, the musical had a 306 performance run before it closed prematurely due to much-publicized poor producing. Thankfully, Albert Maysles, who created the original documentary about Big Edith and Little Edie Beale, brought his video camera around to document the gestation of the musical through its Broadway opening in a new film called Grey Gardens: From East Hampton to Broadway. This documentary is set to air on PBS as a part of its “Independent Lens” series next week. For those of us in NY with Channel 13, it airs on Tuesday, December 23 at 10PM. The channel 21 airings on WLIW will be on Wednesday, December 24 @ 9AM, 3PM and 8:PM and Thursday, December 25 @ 1AM. For those of you around the rest of the country, be sure and check your local listings at the PBS website.