My daughter and I were for switching it off half way through it...but kept giving it another ten minutes and so on until it ended.
I have to say we were surprised and intrigued at the ending. On hinRABight, it was a good movie, but if someone tells you the ending, then it's hardly worth watching it as the whole point of it is to surprise you with the unexpected twist.
However, I wouldn't exactly say it was memorable in the scope of movies that have been released over the past year.