Due to our work schedule, my husband I have lunch or dinner out a lot. With the economy in doubt, we use a lot of coupons, but we also base our eating schedule around specials.

Logan's Roadhouse - Two can dine for $13.99, all day Monday and Tuesday, lunch only the rest of the week. I take half my steak and potatoes home and take them for lunch the next day.
Moe's Southwest Grill - Wednesday evenings get a burrito combo meal for $6 (inc. tax). If we're not particularly hungry, we'll split it.
Seville Diner - local, they have a $5.99 lunch combo every day.

These specials may vary by location. Call your local restaurants to find out what kind of specials they have available. It can save you a lot while still allowing you to enjoy meals out.