Fight the high gas prices!
The Chase PerfectCard gives you 6% cash back on gas purchases for the first 90 days and 3% cash back after that. All other purchases earn you a straight 1% cash back. All the rebates you earn are automatically credited to your account. There's no annual fee for the first year, but there is a $19 fee after that if you don't use your card at least 9 times in a year. The flat cash back percentages (no tiered structure) as well as the 6% cash back on gas for the first 90 days make this a card that could save you a lot of money.
Read my
article for more about the credit cards that give you the most cash back.