Dragon Dictate + AT&T Natural Voice + Eliza = This video? Yeah I could see that. The hardest thing for a computer to do isn't to answer questions but to make comments. Conversation isn't the same as interrogation. One person says something then the other person makes a comment on it.
Pretty impressive for a computer nerd working at home with laptop.
I'm fairly certain the voice is "Audrey", a voice syth pack put together by AT&T labs. You can buy it and plug it into certain kinds of screen reading apps. I've used Audrey in a few songs. Also, this: