The Chase AARP credit card is offering a $200 sign up bonus after spending $500 in the first three months. The card itself offers 3% cashback at gas stations, 3% at restaurants, and 1% everywhere else with no caps.
Here's the link to apply: http://view.offers.aarp.org/?j=fe...7a7512&r=0
Edit to add: AARP membership is not required to apply. Just leave the field blank.