So, if you got a conference invitation which began ...

I am Mr. Laurent Mpeti Kabila, a senior assistant leader of the Revolutionary United Front of Sierra Leone.

I present to you an urgent and confidential request: I request your attendance at The 3rd Annual Nigerian EMail Conference. This is an excellent opportunity to meet your distinguished colleagues, learn new marketing techniques, and spend your hard-earned money. Attending this conference demands the highest trust, security and confidentiality between us.

... would you believe it?

(via Jamie Zawinski).