I've gotten everything from business plans to divorce papers sent to my email@example.com address. In some cases I've tracked them down and called their cell phones, and they still mistakenly send me email. There are some people whose email automatically gets re-routed to the 'correct' account with a note, and they continue to use my email address. Some have even sent me nasty emails saying they're blocking my address, as if I am to blame somehow for their incompetence.
I understand that people make mistakes and typos happen. But when you're dealing with legal documents there's no excuse for this kind of oversight.