Wait, people actually get arousal out of that? 
Yes, quite a few. Usually, it takes form of civilized, consensual BDSM. Sometimes though, it takes form of rape. I think it's in no small part due to stigma associated with BDSM, ironically enough. There are probably backwards places where rape is more "socially acceptable" than BDSM. I imagine that, if a fundamentalist priest (no matter of which religion) from a small community heard of one of his parishioners practicing BDSM, he'd preach just about that for the next weak. On the other hand, you've all seen how the same fundamentalists deal with rape.
I wonder if the "I couldn't control myself" thing is ever true? Can people be overwhelmed to that extent?
There are "people" who could, but this is a pretty poor excuse. It can be an explanation, but an important part of what makes us human is the ability to control ourselves. Therefore, I consider such "people" animals, nothing more. I believe they should therefore be treated like any dangerous animal.
Homo Sapiens, as you know, means something along the lines of "Wise Man" or "Thinking Man". I've taken to calling animals which don't fit under that name "
Homo Insipiens" ("Unwise Man" or "Not-thinking Man"

). Needless to say, I'm not fond of this pest.
I could probably manage a normal conversation with a completely naked woman, even if she was very attractive. Sure, it might be distracting, but that's it. Self control shouldn't be hard for anyone who wants to call him/herself human.
Aside from that, alcohol and drugs, if used in large enough quantities, are really good at reducing even the most intelligent, thinking men to mindless animals. Many rapists are either drunk, drugged, or both. Not an excuse, either, but another reason to use such substances with extreme care.