
If you don't already have a Discover Card, you should get one now. Not only do you get up to 1% cash back on all your purchases, you get 5% cash back on different things every few months (now it's gas, hotels, and other travel things). You can also use their shopping site at http://discovercard.com/shop to get 5% more back at selected stores like Circuit City.
It's a good credit card and if you sign up now through My Easy Rewards you will get a free iPod Shuffle too. The 1GB model is worth about $80.
We did this a few months ago through My Easy Rewards and everything is legit - we received our iPod Shuffle in a few weeks.