We just got ours too.

Last year, Turbo-Tax said that I was required to pay quarterly with an ES form, due to a deficiency in withholding (mostly because of 1099 earnings). Instead, I had my employer send in an extra $100/month, which will hopefully keep the IRS happy. I don't know if it is correct to the letter of the law, but at least it's correct in the spirit.

I should get something back this year, but I want it to be a very small figure.