I hadn’t heard about the religion of Sheilaism until it was mentioned by the Slacktivist today. It’s named for a woman named Sheila, a practitioner of no particular religion who still lived by spiritual practices and beliefs of her own devising.
Here’s a quote from the wikipedia article about Sheilaism that was fun to ponder for a while.
Recent scholarship has re-evaluated Sheilaism, noting that even those who claim a particular organizaed denomination and regularly attend church often have highly individualized perceptions of their faith.