Right now Restaurant.com is offering a special: 80% off their already discounted price. What this means is that you can get a $25 gift certificate for $2. How do you do this? Enter "TREAT" in the coupon code space when you checkout.
Please note that there are some caveats for using these gift certificates. Most of them require a $35 purchase to use them (so you'll actually be paying $10 out of pocket) and you're supposed to tip on the total price.
They're good deals and Gabe and I have used them with great success. It makes a nice restaurant into an affordable restaurant! :)
Thanks to Mimi for letting me know about it!