Clipping away...

I consider myself to be pretty saavy when it comes to clipping coupons. In fact, I save our family approximately $40 each month, but think it could be even more. Especially after seeing countless couponing moms on morning shows telling me how I can get $250 worth of groceries for just $50... WHAT? I understand their concept of buying things when they're on sale and using coupons for the sale items, but don't these moms have a running tally of items they need for their next trip to the store? What if they are low on deodorant? Do they wait until their deodorant goes on sale to buy it? All this said, do you have any couponing or money-saving tips when it comes to grocery shopping that can make my monthly grocery bill less than my mortgage?