I did my federal taxes on paper (printed out from the computer), and we just saw that our tax refund was deposited in our bank account. Unfortunately, it's $800 more than it should be! Apparently, the IRS computers read a "1" as a "9". Now I have to call the IRS and get them to fix their records and mail in a check to them. Such a waste of time! Not to mention taxpayer money.
Update: I just got off the phone with the IRS. They say that we didn't overpay. They adjusted our refund upwards because we didn't give ourselves the "Making Work Pay" tax credit. Crazy. I never heard of it, nor did I notice it when I went through the tax forms and instruction booklet. Maybe if they had named it the "Free Money (For Now)" tax credit, I would have paid more attention to it on the tax form.