Recommended sites that are... kinda awesome!
Rotten Tomatoes - For use as a kind of cache for critical and non-professional reviews.
Spirituality and Practice - Reviews from a believer's perspective on a newly-updated site.
Facets - Facets' detailed site features a biography and filmography of Kieslowski, episode synopses with full cast and crew lists, large image downloads, review snippets and an interview with Agnieszka Holland.
Strictly Film School - Introductions to Kieslowski's post-No End filmography.
Polish Cultural Institute - Synopses and mini-reviews.
Stand by for Mind Control - A nicely-presented recent blog article about the series (love the captions).