"Millennium," at least for the first two seasons, was outstanding. The development of the mythology during season 2 was so compelling that I looked forward to new episodes even more than I did for "X-Files." But when a plague killed one of the main characters in the last episode of S2, the thing that gave the foundation for all the mystical, monstery stuff to stand on was destroyed and I never bothered to watch season 3. I should probably rent it.