Interbreeding between Neanderthals and Homo Sapiens

I think that one of the most important topics to explore when trying to uncover the reason why Neanderthals went extinct and Homo sapiens did not, is the theory of extinction due to interbreeding with one another. Below are several videos (all found on YouTube), that help explain the potential (or actuality) and the ramifications of sexual interbreeding between Neanderthals and Homo sapiens. I hope you enjoy them!