This week, while promoting "The Hangover," Heather Graham, in the ultimate non sequitur, talked about tantric sex. "I first got into it when I was filming 'The Guru' in 2002 and I haven't looked back," she says. "[It's] not having sex continually...The idea is that you let the whole thing build very slowly until finally you merge with your partner. It works for me." Heather did get the memo that "The Guru" was a comedy, right? [Huffington Post]

So what is tantric sex all about? It started in India over 6,000 years ago as a rebellion against organized religion which (universally it seems) dictated that sexuality should be ignored in the search for enlightenment. Those that practiced Tantric (which means "to manifest, to expand, to show") believed that sex could "expand consciousness and weave together the polarities of male and female into a harmonious whole." It urges people to prolong the act of making love to create more intense orgasms by using their energy consciously to extend the peak of sexual ecstasy. The result: both men and women can have several orgasms in a single sexual encounter. [Discovery Health]

Celebrities seem to be all about tantric sex. Here are the ones who have gone on record as fans.