The Chronicle of Higher Education has a feature on academic bloggers here.
A directory maintained by Henry Farrell, an assistant professor of political science at the University of Toronto at Scarborough, lists 93 "scholar-bloggers," most of whose blogs made their debuts during the past six months. (Almost all are in public policy, law, or the social sciences; only 14 of the blogs in Mr. Farrell's directory are by scholars in the humanities or natural sciences.)
I'm not looking forward to the first decontructionist blog: "I had a cheese sandwich for lunch. Of course, the sandwich was a signifying other in the sense that it was acted upon... [continues for 47 pages]"