Good concept, poorly executed.

It was OK. I don't see why everyone loves it so much. It wasn't very smart or deep or well-directed.

It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

I didn’t really have many expectations going into the movie (good or bad), but I actually really enjoyed it. I really liked the characters and the banter between them.