There's an article on Lifehacker today on how to enable and use the new Dictation feature in Mountain Lion on your Mac. I'm hoping the new capability will give the Dragon Naturally Speaking Software a run for it's money and will work well with Gmail when I'm using my iMac. One negative is that any words you speak into it are sent to Apple's servers where they are translated into text (Siri works the same way if you use it on your iPhone). If you're paranoid about Apple storing every word you utter into your Mac, you may not want to use Dictation. I think it's worth checking out.
