Wired News is always one to cater to a large variety of interesting topics, but one article I recently ran across that Google News Alerts delivered to my email is a wired news special on fmri studies and orgasms.
Of the things discussed were the real existance of so-called knee orgasms, nose orgasms, and a number of other orgasms. What the article is getting at is the very idea of what an orgasm is may be changing based on these studies.
Komisaruk: Orgasms have been described as being elicitable from any part of the body — the mouth, the nipples, the anus, the hand. It leads us to think that there is a general orgasmic principle of building up excitation from different parts of the body leading to a climax and a resolution — not necessarily ending in ejaculation, but a feeling of an orgasmic experience. (Source: Wired News)
The article also discusses the surprising finding that some women who had no feeling below the waist were even able to achieve genital orgasm through the vagus nerve.