We get a quick backstage tour of the Palace Theatre, 630 S. Broadway, in "The Gambler" starring Mark Wahlberg, Jessica Lange and Brie Larson (Paramount, 2014). Near the end of the film Mark meets a couple of Korean gangsters in the south exit passageway on his way to a subterranean gambling club.
He goes for a walk across the empty stage (where someone is singing) and down the stage right stairs to the basement. A bit earlier in "The Gambler" we had a quick glimpse of the alley end of the Tower Theatre, 8th & Hill, and then a nice shot of the Warner Theatre, at 7th & Hill.
On IMDb: "The Gambler"