Who Coupons?

Who does coupons?  I've been learning how to do coupons for the past two months.  I didn't realize you can pay little to nothing for things like deodorant and toothpaste!  I can see how it can be a bit addicting - going after that great price on products your family uses.  It's a sense of accomplishment to save that money for your family.  In fact, I'm saving so much on products that I am going to start donating some of what I buy to a local women's crisis center for pregnant/abused women.  From what I hear, they get a lot of donations of baby gifts but very little for the moms themselves.  I think it'd be nice to provide them with the small things.

What are some great coupon sites (if you'd like to share)?