I ended up seeing this last night. It was an excuse to go to the theaters and see that StarWars trailer. It was done very well. The entire movie (except for a flash or two at the end) was done with what looked like a single take. There weren't ANY cuts to be seen. Granted, they must have made a bunch, but you certainly couldn't tell that from watching it.
Pretty good movie about a movie start that was at the top of his game back in the 90's, and he's been struggling to reclaim his old glory. He's devolved down to opening a play on broadway, and dealing with all the hassle that's involved in a play.
Interesting film, full of psychosis. I enjoyed it, but wouldn't give it movie of the year.