Originally Posted by LoathsomePete

Seasons 3, 4, and 5 are the best, with a good mix of mythology building and stand-alone "Monster of the Week" episodes. Season 6 onwards was just a bit of a mess as the mythology got so convoluted and the tone of the show shifted to a more light-hearted nature, probably in part due to the change in filming location. Vancouver in the '90's was a drab, colourless, and quite frankly depressing place to live, which I think matched the tone of the first few seasons perfectly.