In Paul Schrader's "Auto Focus" (Sony Pictures Classics, 2002) the El Rey is the theatre in the film as the venue where the Bob Crane film "Superdad" is playing. Starring are Greg Kinnear, William Dafoe and Maria Bello.
See our El Rey Theatre page for more about the Miracle Mile film house, now a music venue. It was a design of Clifford Balch.
On IMDb: "Auto Focus"