What is the most fortuitous wrong-number call you've ever gotten?

I had a wrong number call once from a fellow who thought he was calling a supply store for security guards. When I explained that ET Productions is a website development firm, it turned out he needed a Web site for his private security company and I eventually acquired a client.

Have any of you had a lucky wrong number call? Romance from a wrong number? Humors call that you still get a good laugh from? What’s your personal all-time favorite wrong number call?