Bazinga! Just kidding. Not that kind of big bang (thank goodness). No, this week, Emily and V are talking about the origin of a fanfiction staple: the big bang challenge. Today, it's hard to throw a rock without hitting a fandom feverishly in the midst of a big bang. But in August 2005, the concept was new, novel-length, and named for Draco's passion for Harry. Have you ever participated in a big bang challenge? What's the longest fic you've ever written?