I shop through their web site all the time and have cashed in points for gift cards. Click on the mypoints link above to sign up (completely free!)
This is one of my favorite programs, because we love Coke products in our house (especially Diet Coke) and the points do add up quickly. I've cashed in for free movie rentals, cases of Diet Coke, Blockbuster gift cards, Budget car rental gift card, magazine subscriptions and much more.
We love Stouffer's frozen meals and I recently started collecting the points. They offer lots of rewards, including free Redbox rentals, free Stouffer's meals, free Fandango movie tickets and more.
We go to the movies about once a month and the points add up over time. We've gotten a free movie ticket, free drinks and free popcorn. The coupons print at the ticket window.
When my husband purchases electronics, he tends to go to Best Buy (though sometimes other stores are cheaper). We've gotten a few $10 gift cards, though it takes awhile to earn them. And they've changed their program recently, such as if you don't make a purchase, points are lost, etc. But overall, a good program.
This program has a lot of good rewards, such as Disney related items, such as movies, toys, etc. You can earn points from buying Disney dvds, going to the movies and more. Also, check out their Facebook page. Sometimes they send out bonus points to Facebook fans.