Extreme Couponing on TLC...what's your take?

I have watched a few episodes of TLC's new show Extreme Couponing, and I've noticed a few things that some might say are a little disturbing.  Many of the people profiled on this show purchase items in bulk, sometimes even buying out the store's stock.  Several of the people on this show are overweight, but we watch as they purchase many items that are considered unhealthy.  I have also noticed that on each episode I have watched, these people have stockpiles of products they don't need,  and they aren't donating items either.  From what I have found online regarding these people, only 2 people that have been profiled on the show donate items (and they donate the majority of what they get).  I'm glad that there are people out there who are now on television to show the country (or the world) that it is possible to use coupons and get things for super cheap.