What just happened?

Rating: 8/10 (4 June 2011)

First off, the reason I am rating this highly is #1: The acting was supreme- the cast was excellent. #2: The plot was very engaging; at no time was I bored- every second was spent racking my brain trying to put the pieces together.
The unfortunate part is, I've only seen the movie once (just now), and don't know what to make of the story. The one thing I wanted to know was left unanswered, or possibly was answered, but perhaps I need to watch the movie again about five times back to back and then spend a few days mulling it over to figure it out.
Complex is the best way to describe the plot of this movie. It was done in reverse fashion, showing the latest scenes first, followed by a scene one step early, and so on. This added an extra component of viewer involvement; I had to be locked into the plot every second for fear that I would miss something, and I probably have.
The main character was excellent; very believable. I suppose it probably isn't too hard to act as someone who hasn't experienced something, especially when you never have. Perhaps this is part of why it was such a believable film.
I have not yet read any of the other reviews on this film, but am eager to see what others have to say on it. Perhaps a more observant person (with a better memory for details) will shed some light on this.
I do highly recommend the movie; it is very watchable, and just interesting in general. Well worth it.