From the very start Lost always featured strange goings on but it was season five that really saw the show step head first into the realm of science fiction. Introducing disappearing islands and time-travel into the mix at such a late stage in the shows mythology seemed unnecessary at the time and ultimately (having now seen season six) left too many questions to be resolved satisfactorily.
The story of the Oceanic Six (the six survivors who escaped the island in season four) and their attempts to get back was also slightly dull compared to the mystery of the island itself that was the sole focus of previous seasons. A lot of time was devoted to this story but it ultimately lacked the mystery audiences had come to expect from Lost.
Despite these added complications however Lost continued to tell a truly intriguing tale that for the most part kept audiences on tender-hooks hoping for answers to the ongoing question of the islands true purpose. Workplaces and forums were constantly alight with speculation and the amount of discussion generated by the show was clear testament into just how deeply involved audiences had become in this unique piece of television.