I had the same experience. We had a customer whose cookies were mentioned on Oprah and then Rachel Ray at a later date. We saw a bump in traffic, but the customer didn't warn us until a few days before air, so our recommendation was to leave the site alone rather than risk introducing changes that could produce bugs. We put a little time in to tweaking the site's error pages to be more friendly, but when the air dates came, nothing spectacular happened. We actually saw a little bit more traffic from Rachel Ray than Oprah, probably because cookies are a more relevant topic for her show.