The Department of Midnight
I've been throughly enjoying The Department of Midnight podcast.
Written by Warren Ellis, as a series of self-contained stories concerning Dr. John Carnack and his investigations as part of the Department of Experimental Oversight (Dept. of Midnight).
Describing it as a blending of science fiction, folklore, and horror
, sums it up quite nicely. And at around 20 minutes each there's no dragging in the story.
Both the acting, and sound design, are equally top notch.