Saw this yesterday. I enjoyed it. Very disturbing and claustrophobic, especially if you like medical and body horror. Made the most of its limited budget. Unfortunately for me, I heard someone compare it to another film, so I knew what was going on from the start. But if you just go in blind, I think it's a fun way to spend 90 minutes. There are some really embarrassing green-screen effects at the very end, but it didn't ruin it for me. I was more like, awwwww that's cute that they tried that. I thought the lead actress did a fine job, the main doctor was good, and I enjoyed all the weird-o patients. I think the whole production team was sincere in their desire to make an enjoyable film, and I think they were successful. It's certainly not the best thing ever, but it shouldn't make you angry either. If the trailer intrigues you, give it a shot!