Sally Mae Barclaycard is 5% on the first $250 a month I think it is.
Discover IT is 5% on the first $1500 this quarter (buy gift cards!)
Amex Blue Cash Preferred is 6% at grocery stores, if you can buy giftcards for gas
Chase Freedom is 5% one quarter too I think
Failing all that, BofA 3-2-1