Talk to me, Mac

I forgot to add that I accidentally (I'm sure that's the wrong term to use, but it's the only one that comes to mind) discovered my Mac's text-to-speech capabilities over the weekend. I was trying to force refresh a Web page, but I forgot that I was on a Mac, so I hit Apple+F5 and my computer started talking to me! It was "Alfred," and he was a bit weird, so I changed it to some alien voices. I like some other lady's voice best, but I thought aliens would be more fun. There are over 10 voices from which to pick, so you know I was just sitting at the computer and giggling to myself while I went through all of them.