Legal Times Blog:
The BLT, The Blog of Legal Times, has had a lot of great stuff recently, including Tony Mauro's coverage of Supreme Court arguments and excellent coverage of DC legal news. It averages 7 or 8 new posts a day, so there's a lot of stuff there. Definitely worth checking out.

  UPDATE: To pick a recent post as an example, check out Obama Transition Team Pushing for Secret Legal Memos from yesterday.