Outback Steakhouse has always done pretty well without offering coupons. The only deal I've EVER seen them offer was the gift card promo at holiday time 2009 (buy $100 gift card, get one (can't remember value - $10?) free for yourself.
I know they have a rewards program on their website, but I couldn't figure out how to save in their restaurants with it. It seems to only be about Tim McGraw. However, if you sign up, you immediately get a coupon for a free Bloomin Onion, with dinner purchase (2 entrees, I think).