Thanksgiving is a time of year of giving back and one of the best ways to do that is through your local food bank alleycat. The idea is simple; at every checkpoint, there is a grocery list. Pick up the required or recommended amount, and head to the next spot. Usually, there is a speed and cargo category (to make it fair to those carrying hundreds of pounds). SF's got theirs, LA has theirs, and NY has theirs. Check out my good homie, Crihs, at Cranksgiving NY 2010.
Be sure to find your local one and support a good cause.