San Antonio Spurs star Tim Duncan is teaming up with the San Antonio Food Bank for the "Tim Duncan 2.1 Holiday Challenge." Through the month of December, Duncan will equally match every monetary donation to the food bank. His goal is to cover 2.1-million meals. For a donation of $21 or more, you'll receive a digital thanks from Duncan via the Food Bank. A gift of $2,100 or more will get you a special thank-you video from Duncan.