I've mentioned Vocalpoint in the past: it's a great company that let's you sample and review various products. Through them, I get great coupons and product samples in the mail.
Most recently, I got a full-size bottle of the new Pantene Nature Fusion shampoo:
Some great coupons were included. If you haven't already signed up for Vocalpoint, what are you waiting for? Do it today--sign up here.