Ok, I'm the only one to defend Blazing Saddles. No big deal.
There are a couple of things that make me turn my head when I'm watching tv, and one is the visual of a needle going in. Blood I have no problem with.
My mother loves "Bones" but in every episode there's at least a scene where I have to turn away, and if you've seen the show you know what I'm talking about. I don't know what it is, I have no problems (I think) with rotting corpses, but somehow the ones on "Bones" really bother me.