Hey -
Been listening to this at work, and it's been really great for figuring out how some of the old time radio shows "painted the scene" with words.
http://otr.net
I really recommend people check out:
Hall of Fantasy
The Hermit's Cave (the hermit's really annoying, fair warning)
The Inner Sanctum
There's some other really good ones - but those are what I was thinking of in regards to Ravenloft 'n stuff.