Went to BD's last weekend for lunch and left very satisfied. http://www.gomongo.com/experience/experience.php
It's a create your own stir-fry place that has about a dozen meats and 20 sauces to choose from. When I went on Sunday I had a coupon so I was able to get my lunch, drink, and tip for under $8. That $8 also included the $2.99 doggy bag, which is something they just started doing. A little extra money so I don't have to cook for the rest of the day? Yeah, I'll take it.
Without the coupon, I'd say you can get a drink and your meal for around $11 for lunch and $13 for dinner, which starts at 4.