“Exorcistic: The Rock Musical Parody Experiment” is immensely entertaining, filled with hilarious songs and solid laughs. The entire cast is awesome, has great singing voices, and is “possessed” with silliness. I was in complete awe of the actress who plays Megan (Regan), and how she wrings the physical comedy out of demonic possession. If you know the film, the parody goes layers deep and attacks your funny-bone from all sides. What fun!