Flutterby™! : Competence Porn:

Charlie Jane Anders: The Moment When Science Fiction Split off From Competence Porn:

But at some point, including scientists as heroes became a bit of a taboo in science fiction, with the notable exception of Walter Bishop in Fringe. (And in the U.K., Doctor Who is a holdout.) We're only allowed to explore new science or strange ideas if our hero is an "everyman" who has no clue what's going on.

Peter Meerholz points out that he's been pointing to Arts & Letters Daily for a while too. I'm beginning to think that between the basic list of webloggers we've completely mined the web for the good stuff.