I have seen a bit of the show, and I agree with the poster who described it as organized hoarding.
I only clip the coupons in the paper that are for items we already use. (If you buy everything you have a coupon for, but aren't going to use it, then it's not really saving, is it?) Some of them come pretty often - I don't remember the last time I paid full price for Ziploc baggies (our local store brand ones are too flimsy or don't seal well for the freezer) or feminine hygene products. I also do about 95% of my shopping at the store here that tends to have the best deals. If that means that I miss out and pay a dollar or two more for my groceries this week than I would have, then it'll probably even out next week anyway; even if it doesn't, my time is still worth something.
The real trick is "stacking" coupons, and taking advantage of whatever deals your local store uses. For instance, our store - HEB - does a couple of different "combo locos" every week. This might be something like, if you buy hot dogs, the store brand shredded cheese is free. And if I have a coupon for hot dogs, they'll let me use that, too; since the "free" coupon is for the cheese, it isn't doubling up on coupons.
I tried to dowload a coupon printer, and downloaded a virus with it. I don't remember which one it was, but I'm going to stay away from all of them. Most of the coupons you can print from individual stores, though, don't require you to download anything, and I haven't had a problem with that. Also, check out the websites for products you buy a lot of - you might be able to print a coupon that requires no download, or in cases like Pampers.com or Proctor & Gamble, they will mail you coupons.