Poster design by Art Machine, A Trailer Park Company
Alternate designs (click on thumbnails for larger version)
The Human Centipede II (Full Sequence) (2011)
It's hard to get much creepier than a whole bunch of bound naked people linked together to make a giant centipede. Oh wait, make it look like a human spine and it gets creepier still. Of course most critics will tell you that the poster still cannot come close to how repulsive and disturbing the movie is. That's probably a good thing.