Contact Kraft Foods and tell them that you will boycott their company until they pull all advertising from David Lettermans show:
http://www.kraftfoodscompany.com/contacts/other-contacts.aspx
on no, Kraft cheese I will have to give up, ohhhhhhhhhhhh that hurts. BUT I will, and will tell them so tomorrow.
Thanks for the link. I sent them a pretty clear message.