According to this NPR story, it's been proposed that the person behind WikiLeaks may have carried confidential information out on a CD labeled as a Lady Gaga album.
One can only assume that if anyone saw him, the conversation went something like this:
Observer: "Hey, what's that?"
WikiLeaker: "Oh, just a Lady Gaga CD."
Observer: "Uh, right. I'm not asking, and you're not telling."