The CUSP

These guys:

http://ohioskeptic.com/grassrootsskeptics/

Have set up a directory of Skeptical resources...

Podcasts (including The Cusp :-D)
Skeptcal Orgs
Skeptical Websites
Blogs
etc

There's even a page where you can join a register of speakers / presenters... (Presumably you'll be able to search the registry for a speaker for your event...)

Check it out - and add your page / blog / podcast to the list.