I saw Human Centipede. I got really bored towards the end, TBH. I was browsing my phone while listening to the audio, and looked up sometimes. It had a shit ending, too. Like did they just starve? What happened?
I'm a bit tempted to watch the sequel, but I didn't for now.
Let's see... A horror film I enjoyed was The Ring and its sequel. I can't think of any others right now.
The original "The Ring" (Japanese) or the remake (USA)? Remake didn't feel scary at all compared to the original for me, although the acting is considerably better! I could suggest 1-2 good ones you could check out...