I have also watched this show and I was also watching the episode that was on a little while ago.
That show is sadly the DEATH of couponing. Everyone watches it and thinks wow I really want to do that. Well then they think hey I can just take the coupons from the newspapers without paying... sadly it is a crime and not many people know it.
They also try to use the coupon for something it is not (like on a different product).
So, it may let the light in on couponing, but it really does give the wrong idea to people.