Just had a go at writing an app for Windows Phone 8.1 to make use of the voice command functions. You can ask Cortana to tell Shakespeare to speak to one of your friends - either compliment them or insult them. It's free to try so let me know what you think:
Talking Shakespeare 8.1 | Windows Phone Apps+Games Store (United Kingdom)
Talking Shakespeare 8.1 | Windows Phone Apps+Games Store (United Kingdom)