Excellent explanation, Pink!

My mother has OCPD, and I can attest that it's nothing like OCD (and certainly nothing like Asperger's), as far as I can tell. It's also not much fun to live with, as the person tends to believe they are right about everything, theirs is the only way to do things, and other people can't possibly live up to their standards (which is probably true). They tend to be über organized and dislike anyone tampering with their "system," whatever it is. They also seem to be a bit challenged in the humor and spontenaity departments.

Did I mention they're not fun to live with? This has been my experience, anyway.