Citibank divident is pretty good; it gives 1% to every purchase (not like Discover 1% rebate). Once the rebate reaches $100, you can receive the check in a couple of days. But now they changed the policy and the user can ask for the check when the rebate reaches $50.
I have been using it for more than two years, and now it automatically raises the rebate to 5%.
Sometimes they have promotions for new appliers by giving 5% rebate and 0% APR for one year.