Eva of Easternblot has written an article about science blogging that is very good.
In the article, she interviews Tara Smith, PZ Myers, the Trio Fantasticus of the Inkycircus, Carl Zimmer and Oliver Morton.
The article appears in the latest issue of Hypothesis Journal and you can download the article here (pdf)
At the bottom, there is a short list of other interesting science blogs and one of the titles looks vaguely familiar...