Welch's has a thing kicking up until December 21, 2009 where anyone can go to http://welchs.com/harvest and click the "Donate Now" button. For every click, they will donate eight-8 oz. servings, up to 1 million servings to Americans who are "at risk of hunger." No purchase necessary.
Welch's is also donating a minimum of $100,000 to Feeding America. You can only click once per day (per IP)...it would be kinda cool to make a robot do it for you every day.