The struggle between good and evil has kept mankind variously on its toes, on the edge of its seat, and otherwise precariously positioned since the genesis of the species. Vice versus virtue, it’s a hard balance to strike if you’re trying to walk the line between the two, and if you’ve set up camp on either side then it’s not easy to swap teams. A fact of life as old as time itself, the universe’s yin needs its yang; for every good egg, there needs to be a bad guy to keep everything in balance. Sherlock Holmes had his Professor Moriarty, the Montagues had the Capulets, Brad Pitt had Kevin Spacey (in the movie Se7en, that is – presumably not in real life, but who knows?), Road Runner had Wile…