Honestly nothing has really bothered me much...from what I've seen...not to say there is nothing out there that could, just I haven't seen anything that has. Mind you I grew up with one of my favorite childhood movies being Robocop...sex, drugs, and a fair bit of blood.
Honestly the worst thing I can think of is this one episode of House where he was I think being operated on...he was having nightmares...a patient he had where his testicle exploded and eyeball swelled up and popped out of its socket...damn well almost gave me nightmares and I almost got sick the first time I saw it because I don't know why but I was like afraid of that shit happening to me lol.