You can contact the FTC about receiving the fraudulent check. At least you are wise enough to know it's not real. You wouldn't believe how many people come in here after they have deposited the check, and some of them wired money to those strangers...then the bank found out the check was fake and whooo boy.
If you ever want to try mystery shopping, check out the links at the bottom of the page for new mystery shoppers and the official list of mystery shopping companies.