I know those words together are sometimes an oxymoron but I really do have a nice credit card story.
I have a WAMU visa card that pays me a 1% bonus on all purchases. Last month I figured my bonus was about due so I didn't run to pay off the card immediately because then I would have a large credit and I didnt want that. As soon as it posted (about mid cycle) I immediately paid off the remainder (about $60). Whe I got my statement in the mail I noted an extra credit to my account of .13c. Turns out that I had accrued that much in interest by waiting for the rebate to post and WAMU just deducted that from my account. I guess they didn't want to deal with a .13c check!