Just-in-time year-end tax tips

At the risk of sounding like Scrooge - the holiday season means the year is almost up, and it's time to start thinking - taxes.

But you still have two weeks to get your ducks in a row to fare as well as possible for 2011.

There are plenty of things you can still do to maximize your refund or lower the amount you wind up owing, financial contributor Carmen Wong Ulrich pointed out on "The Early Show" Monday.

She outlined strategies involving medical deductions, IRA contributions and withdrawals, self-employment deductions, charitable donations and more.

She also named what she called the biggest tax mistake you can make.