Have you ever wondered how my mind works? Probably not, but I do often whoop-up in the pop culture questions during a pub quiz. I can't answer the why, but I can show a representation of the how. Below is a visual layout of the types of media links I tend to make. In this example I read a news item that actor Stephen Fry was going to play Sherlock Holmes' brother Mycroft in the upcoming Guy Ritchie film adaptation sequel. That news got me thinking... then... Voilà! Links! Info!
More research would undoubtedly lead to more links between these items, but these are the connections came to me just off the top of my head.