I have the same format email address. My name is unusual enough that I think there are only about three other people giving out my address though. Mostly they are individuals and small businesses emailing me, and I've had good luck replying with the information that the person they are seeking isn't at my address.
My favorite, though, was this one particular guy who gave out my address dozens of times. I emailed his proper address, I replied to all his business emails.. he still kept doing it though. Then one day, he signed up for one of those identity theft protection services.. with my email. The temptation to royally screw with him was almost overwhelming, but I didn't. He eventually stopped sending me stuff, though.