Found this addon while downloading the new Rawr,Looks pretty cool .
Download and info : http://wowvoicebox.codeplex.com/
WoW VoiceBox
A voice recognition program for World of Warcraft that allows for key presses and macros to be mapped to voice commands as well as allowing voice control of in-game chat channels.
About
WoW VoiceBox is deisgned to allow for key presses and macros to be mapped to voice commands. It also allows voice control of in-game chat channels, so you can chat directly without having to pause what you're doing. All commands can be either broadcast to all copies of WoW on the local machine or sent only to the focused window.
Requirements
* Windows Vista or Windows 7 (32 or 64 bit)
* Microphone
* World of Warcraft
Download and info : http://wowvoicebox.codeplex.com/