I’ve mentioned the Voice-Over Bulletin Board a number of times now, not least because it’s a superb resource with a bunch of people who very well represent the intersection of being talented and being nice.
I originally found the Voice-Over Bulletin Board as a result of following a link from Connie Terwilliger’s web site. I’ve added Connie’ site to my blog roll of voice-over people and places. However, I also want to point you to a very cool part of Connie’s site. She gives some excellent advice on warming up your voice on a page called Voiceover Exercises.
Check it out.