McSweeney's can still bring it... here's a Revised Corporate E-Mail Signature that, with some edits, I'd love to use. Excerpt:

If you are not the intended recipient, you should not copy, distribute, or take any action. That said, keep in mind that there are no coincidences; you have received this, so let's just take it from there. Freud would argue you're absolutely my intended recipient, right? The long-dead coked-up thinker stuck on Mom would say that no matter how unlikely it was that you received this e-mail and read this signature, it was, in fact, no accident.