Demo Chrome's synthesized text-to-speech capabilities.
Demo of the text-to-speech (TTS) capabilities in Chrome.
You can find additional apps that use Chrome's new speech capabilities, and additional voices, by searching for TTS in the Chrome Web Store.
This extension is open-source. You can find the source code and additional developer info at: http://code.google.com/chrome/extensions/trunk/samples.html#chrome.tts
Linux users: you need to install a voice first. Search the web store for Lois or Flite for a couple of possibilities. Mac and Windows users will get a voice by default.