Well, not exactly a freebie, but I couldn't think of anything that rhymed with, Hey! You Can Get $20 Off Dinner at McCormick and Schmick's If You Work Quickly!
Nothing really enables a romantic night out like a coupon, a gift certificate, or a free babysitter... if you're a parent, that is. DINK lifestyle, my old friend, sometimes I really miss you.
This link really works, by the way, you just have to use their online reservation system. Jeff and I went last year on a quiet Sunday night and we're going again this weekend. It's our annual date night.
Sometimes we have two.