Coupons.com has released a bunch of new coupons, including a great $1/1 Dannon DanActive coupon! Starting 2/12, Publix will have the 4-packs of DanActive on sale 3/$6, so using this coupon you'll be able to get them for $1 each! There is also a $1/1 Dannon Yogurt coupon in the 1/23 SS insert (exp. 2/28/11) and a $1/1 Dannon DanActive Yogurt coupon in the 1/9 SS insert (exp. 2/28/11).
The printable coupon is a manufacturer coupon, but it says "Redeemable only at Publix." I'm not sure if you'd be able to stack coupons or not. To be safe, ask a manager at your store.