I usually over-pay my credit card bill slightly. Having a slight credit doesn't hurt anything, right? Well, a few months ago two of them sent me checks. End of the fiscal year, I guess. The first one didn't say a thing about why they sent it. I didn't know what was going on until the second one came.
Just now I got a third one. This may be the last; I only have three or four credit cards. Anyway, this last one--from Washington Mutual--is for $0.01. They sent me a check for ONE CENT. La-di-FRICKIN-da! I'ma drive down to the bank right now and cash this baby!