Hey Drew...check this out:
Amazon.com and Sgt. Johnson get square.
If you were one of the few who were informed by Amazon.com that the Sgt. Johnson pre-order offer was limited to one per household, you should drop their customer support a line. They're making good and making sure that you'll be granted one code per copy. Of course, if you just think this will be a great way to get you hands on a bunch of free Johnson even if you didn't pre-order, think again. They have fancy computers and they can verify your purchase order on the fly. Marvelous age we live in, eh?