Here are some PETA campaigns I will be writing letters for today:

Tell a Texas supermarket to stop selling Foie Gras:
http://getactive.peta.org/campaign/HEB_foiegras

Thank New Mexico for banning cockfighting:
http://www.helpinganimals.com/f-nmcockfighting.asp
(also, if you live in Louisiana, ask your govt. officials to ban it there)

Here are some details about the dogs that have died in the Iditarod this year:
http://www.adn.com/iditarod/race_2007/features/story/8712297p-8614496c.html
It's never too late to write the sponsors:
http://getactive.peta.org/campaign/iditarod_wfargo