Definetely sex. You can't watch ANYTHING without seeing people going at it. I know it's a part of life, but it's not always nessecary to make everything a soft-core porn movie, you know? Plus, it gives people unrealistic expectations and makes it seem like a terribly casual thing; it's a big deal to a lot of people, and it should be treated with respect and discretion, not paraded about.
LoL, I think it's funny that in our culture sex is considered more inappropriate than violence; Because sex is a natural part of life and people getting their heads blown up is not. *shrug* But that's just me.
If by "other" you mean: "Crazy *** ripping open bodies and splattering blood vessels and brains all over the floor, windows, ceiling and other people with teeth, chainsaw or some sort of 'slaughterous' weapon..." .........Then yes, I vote for "other" 'o3o