The Supreme Court of the United States has a blog run by American lawyers, providing detailed commentary and analysis on cases, and updates readers on pending and newly-filed appeals. (I reckon that our own Supreme Court and High Court are both candidates ripe for something similar. Especially our Supreme Court, because unlike the High Court, it doesn’t list upcoming appeals.) That blog, SCOTUSblog referred to the just-launched UKSCblog.
UKSCblog also rated a mention from Times Online Law Central (which now has an everything you wanted to know about the new Supreme Court section), and Canadian blog slaw, also great blogs themselves.