KPCC has a great audio interview with the founder of Cinespia:

For ten years now, LA residents have been lining to get into Hollywood Forever Cemetery. They aren’t waiting to pay their respects, or visit a famous grave, but to see a classic movie under the moonlight—sometimes just a few feet from where the stars of the film are buried. Off-Ramp producer Kevin Ferguson talked about the 10 year anniversary with John Wyatt. Wyatt founded Cinespia, the group that organizes the cemetery screenings.