Microsoft are releasing a game like this in Japan, to try an boost sales.
You use the microphone, and you teach this Anime robot chick in a short skirt and tight shirts (Fook Mi and Fook Yu style - right down to the hair from the screens I saw) to be more human. I forgot what the name of the game is called. But it's something pretty suggestive. I think it's called P.O.R.N. or something.
But, like DOAXBV, the only thing going for it is sex appeal, and the only people who will buy it are horny 30 year olds who still live with their mums. Cause we all know that when you have control of a hot chick like that who will obey anything you say, it's gonna get a bit 'out of hand', if you know what I mean.
But will it work?
Most definitely. RahXephon says games like this are pretty popular, so yeah, it probably will be.