Most large entertainment venues now have digital video projectors to project an image onto a stage screen. Take advantage of this whole new dimension to the entertainment experience. Set the mood with video backdrops. Video is more lifelike and virtually free compared to the expense of renting custom painted backdrops.
For Theater productions, design a complete video plot for a show and print a report for the show tech listing all timing and special instructions. Loop and multi-play allow your to use short videos as continuous backdrops over a long scene (ex. rain or snow storm, ocean beach, etc.) .
For music concerts, play videos of band members, crowd reactions, band videos (sound can be muted of course) or just interesting clips related to the piece of music being played.