The ability of digital transmissions to slot a movie into a host of theaters for a single screening could bring new life -- and new revenue -- to dozens of films that haven't seen the inside of a theater in decades. Only days after it was announced that the film classic Casablanca will be returning to the big screen for a 70th anniversary revival on March 21, it was disclosed that The Bodyguard , starring Whitney Houston and Kevin Costner, will have its 20th anniversary screening a week later. Both movies are being screened at 7 30 p.m. regardless of the time zone and are being handled by NCM Fathom Events. The screenings are also tied to DVD/Blu-ray re-releases. Warner Home Video plans to release The Bodyguard 20th Anniversary Edition on March 27.