There's a whole big marketing campaign going on with Costco and pork products. I missed the deadline on a couple, but here are some that are still open:
Just a Mom's Take on Things: Ends 10/18 -- http://www.momstakeonthings.com/?p=10405
Jolly Mom: Ends 10/21 -- http://www.jollymom.com/2011/10/easy-everyday-dinner-pork-tenderloin.html
Will add more when I get a chance.