Check out this site. This guy’s ex-girlfriend applied for various credit card accounts over the Web in his name while living with him for several years, grabbing the statements from the mail as they came in or signing up for paperless statements so he never found out about them, until she finally skipped town right before she was going to get arrested for doing the same thing to his sister. He’s managed to straighten things out with all the credit card companies except Discover, which refuses to to acknowledge that the card in his name was obtained fraudulently, to discharge the fraudulent debt, or to remove the damaging information they’ve placed on his credit report.
Also check out the Usenet discussions about the incident here and here.
It’s truly depressing to read about huge, faceless corporations making people’s lives hell like this.