Video: PS3 Heavy Rain Demo Glitch
I know I'm late on this but I thought I'd post it for all those who haven't experienced it yet. In the crime scene portion of the Heavy Rain demo, if you walk near your car on the left side of the screen you may run into a slightly annoying glitch - watch the video for an example.
So be forewarned when you decide to give the game a go because it just make you poop your pants if you're not ready for it.