Check out the Good Egg Project! From their website:
"Join America’s egg farmers in a commitment to living more healthfully and giving back to the community. For every pledge made, we will donate one egg to Feeding America – up to one million eggs! That’s in addition to the 12 million eggs donated annually. Pledging is easy. Simply provide your name, email and zip code, and “sign” the pledge by checking the box. That’s it!"
Once you make the pledge, you'll see a prompt to print your coupon for one dozen eggs FREE (up to $1.50) with the purchase of one dozen eggs. The coupon expires 12/31/09.
Hurry because the coupon will only go to the first 20,000 who make the pledge!