Tomorrow morning I'm going to be on the bus for Plovdiv Airport where the movie is being shot. Now I know more details - it's no sci-fi and so far there's no official indo about John Malkovich and Omar Sharif, but I personally saw John Cusack. I had no chance to speak with him in Monday when we were called to try the uniforms, but I hope that I'll manage to exchange a few words with him before the end of the shooting. The movie is called "Brand Hauser", and Cusack is also a producer and co-writer.
Here's some info in Wikipedia: