Six years have passed since "The X-Files" went off the air after nine seasons; fans agree that it left with a whimper rather than a bang, and ten years have passed since the first and only feature film. So the question of the day is: why a sequel? Why now? But perhaps a better question is "why not?" The fact is that FBI special agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) always had vats of chemistry; they arguably outstripped and outranked any other male-female couple in the history of television. Their pairing was perfect: Mulder believed -- or wanted to believe -- in the supernatural while Scully was a scientist, a doctor and a Catholic who believed in God but looked for reasonable, logical explanations in everything. In each episode, the team was called in to investigate some kind of paranormal activity, and they debated and discussed the various possibilities behind each. In the end, hardly anything was ever proved or disproved.