Interactive Audio

Oddcast is the company that makes those horrifyingly creepy Avatars like "Anna" from Ikea (scroll down). They also have cornered the market on interactive audio. Check out this campaign for Comcast. The technology for recording your voice, or dialing it in, was created by Oddcast. Big Spaceship is doing something similar for a project and I've been unable to find any competitors. As it stands, audio is still spotty on the web, but as video is becoming more and more popular, audio will start to become increasingly important as well. I'm surprised there aren't more companies offering these services.