Last week I returned a movie, and was irked when they didn't acknowlege it the next morning. That afternoon I received a very polite email saying I had "inadvertently returned a disc from my personal collection." Ack! The asked me to check for their movie, and that my DVD would of course be returned.
I sent the right one back the next day, and I received my OutKast CD a day later in a nice cardboard mailer.