Pretty good.
The results hit me spot on, which was great. But man, the atmosphere was creepy! Call me chicken, but I was waiting for a picture of the Exorcist girl to pop out at the end of the game (I am so glad you didn't do that).
You added humor to it, and yes, the results you get are suprisingly accurate.
My first score was a 59. I played it a second time to see if the game actually continued ('cause I clicked YES to the question asking whether I wanted to see my score or not, which proved I was impatient. :P). I got a 66 second time.