Love this one. While I wouldn't consider it porn, I do find myself addicted to the Keira Knightly version of Pride and Prejudice. No matter how many times it is on tv, I can watch it over and over again. Oddly enough, I don't own my own copy of it on DVD yet.
I just get this wonderful feeling every time I watch it, and relive the romance each time as if it were the first time. By definition, that's definitely more of a turn on than porn. So I would have to agree with the post card.