The birth of a child is a joyous event. Of course sometimes -- especially on soaps, as it turns out -- it's not so simple. From time to time, there's a child in Port Charles whose parents are not who everybody thinks they are. What you've got there is a paternity crisis, and straightening it out is never pleasant. We've gathered some of the best examples of these throughout the years, so click on through the gallery and remember the heartache!