US Airways Dining is running a bonus promo but it is by invitation only. You can earn an extra 3 miles per dollar.
Sweeten The Deal Bonus:
How to earn the bonus-
1-you must register to start earning towards the promotion
2-Spend $125 dining at program restaurants by 12/31/11
3-Complete reviews within 30 days of dining
This is a pretty nice deal if you eat out a lot. For spending $125, you would earn 500 US Air Dividend Miles.