Most interesting to me:
--The blackened, horrible lungs of a smoker next to clean lungs. They actually put a box next to the smoker's lungs and asked people to consider throwing their cigarettes away, and it was about a quarter full.
--The uterus with an IUD in it
--The teratoma, complete with hair and teeth
--The skeleton holding hands with its own musculature
There was also a room of miscarried fetuses at various stages of development, some with birth defects. They offers an exit right before this room if you didn't want to go in there. I'm thinking that both pro-lifers and pro-choicers would find a way to use that room to their own advantage--the pro-lifers could point to the ones that look like babies, and the pro-choicers could point to the ones that look like just tissue.