Hey, just wanted to add a few I frequent at...
CSI Forensics (for CSI, obviously): http://www.csi-forensics.com/

NCIS Fanfiction Resource (NCIS, multi-lingual, built on the owners own coding): http://ncis.fictionresource.com/

MTAC (more NCIS, pretty small: http://ncisfic.com/

HPFandom (Harry Potter, runs on eFiction 1.1): http://www.hpfandom.net/

And two that are CSI archives but not user updated:
CSI Slash Archive (mainly links to the fics, no real commenitng): http://csi-slash.popullus.net/

CSI Slash (pretty much plain text archive, no commenting etc): http://chance.popullus.net/csislash/index.html

And as mentioned above WWOMB which has posting via yahoo groups as well as user posting.
xxx