There have been reports from Sendai, Japan that a theatre showing horror anime Kara no Kyoukai - The Garden of Sinners has been using a PS3 to project the film.
In the theatre, folks claim to have seen things like messages to charge the USB controller pop up on the screen.
According to one site, the Blu-ray version of the film is being screened, but Wired Vision confirmed this with the film's distributor and Sony subsidiary Aniplex that a data file of the movie is running off of a PS3. The film is in full HD, and there is apparently no noticeable difference between it playing from the PS3's hard drive and a digital projector hard drive.
This theatre in Sendai is not alone in using the PS3's hard drive for this flick—though, many on the Japanese internet seem to think this is rather cheap on the part of the cinemas. But a hard drive is a hard drive. It's the quality of the digital projector that folks should be more concerned about.
Kara no Kyoukai ("Boundary of Emptiness") follows Mikiya as a series of strange, violent deaths begin occurring in his town.