I watched the first two episodes, based mainly on the vast lead-up promotion, and stopped. Nothing interesting had happened, apart from someone saying "Those were polar bears!"
Quite a few people I know gave up watching it after an initial disappointment.
Anyway, I did a bit of research and discovered what the premise is behind the whole idea of the series. I won't do a spoiler, but I don't think watching all 426 episodes is worth the effort.