Voki

This is a Voki that I typed text into, and which turned my text to (robotic) speech. Create your own at http://www.voki.com/, and see what it does with the text you type in.
Then, below, I've made a second one using a recording of my own voice. You can either record directly into Voki, or create an mp3 using Audacity or (as I did) GarageBand on a Mac.

Caveat: Voki uses Flash, which is not installed on all computers and sometimes causes trouble.