Gross Receipts Tax
This is a pretty neat idea that is making its rounds in the Pennsylvania government these days. Basically, instead of paying 6% sales tax on things you buy at the store (except for unprepared food and clothing), you would pay nothing. The price you see on the item is the price you pay for that item.
Instead of you paying tax, the business that you bought the stuff from would pay a 4.5% tax on everything they sell during that year. Of course, the result is that the business is going to end up raising prices on everything to cover the tax, but probably not as much as what the 6% tax currently costs because the new gross receipts tax would be spread out over all of their goods.