Restaurant.com is having a four day sale - 80% off their already reduced restaurant gift certificates. Get $25 gift certificates for $2. Use discount code DISH and click apply at checkout. Offer valid June 22-25th.
PLUS go through Upromise and get 15% of your purchase for the kids' college fund.
Be sure to read the details for the gift certificates you want, they all have different rules for use and some are more strict than others. You print your certificate at home, so you can purchase today and use tonight.