CNN is absolutely terrible, first reporting on events sometimes 12 hours after they have occurred. They still have not reported that a hydrogen explosion occurred in Unit #4, which has been widely reported in Japanese media since last night.
http://live.reuters.com/Event/Japan_earthquake2 is a real time site that includes links to breaking stories, posted both by Reuters staff and by readers. The stories are up-to-the-minute fresh. It is really the only site you need. As stories and links come in here, you can build up a list of other sites to track.
http://jibtv.com/program/fullscreen.aspx?page=0 is NHK World TV Live, in English. Another mirror is here http://live.nicovideo.jp/watch/lv43296023
http://park18.wakwak.com/~weather/geiger_index.html shows radiation readings in Tokyo, recorded by an amateur (since no official readings are available).