Fox’s hit television series “House” is currently shooting at the former Greystone Park State Hospital according to this article on NJ.com: TV Show “House” to Film at Greystone Park Psychiatric Hospital. It sounds like the production is trying to keep things under wraps for now, so there’s not much information other than that the hospital will “play” the fictional Mayfield Psychiatric Hospital on the show.
Unfortunately, scenes from Greystone probably won’t appear on the program until next season. Also, the area will be closed to the public while filming takes place. I won’t be surprised if a few Greystone “regulars” manage to do a little spying though:) Not that I recommend or endorse such things mind you.
Another little interesting tidbit from that article is that a movie titled Marvin’s Room was filmed at Greystone Park. I wasn’t aware of that and will have to check it out to see what kind of footage of the hospital it has.