EDIT: We Hiffed it. Hiffers easily got a huge chunk of the shirts though!
While watching The Soup tonight, I saw what might have been the world's longest commercial. It had Mr. T, a fake doctor, and a dramatic reenactment with Anna Ferris, before culminating with this. The fine print says it starts tomorrow, but only 25,000 people can enter and it accepted my email so you might as well do it now and hope for the best.
The site is crawling, but they should email you a coupon for the free shirt eventually.
EDIT: Got the coupon already. We get until March 21 to redeem it.