I hate to say it but I think im that guy. And it is never me making all the noise either - and I do feel quite bad for my neighbors.
It helps if your friendly with them. It would be alot easier to ease into the conversation. I try to make sure all my windows are closed (made that mistake a couple of times before and had security at my place - no bueno. We have alot of gated security communities here)
If its any consoliation to you - I wish there was something I can tell you. But its hard to tell the plate to stfu. Know what I mean? Anything short of putting a pillow over them doesnt really help.
Some of the women I sleep with are conscious about it though.
If I were your neighbor and you approached me about it I would sincerely apologize and then buy you a fine scotch for your troubles. Because I know for sure its hard for me to control the plate im with for that night. Blue Label would fit the bill, no?