Bret Victor's Magic Ink essay galvanised me in to pursuing UXD as a career. For my Fate prototype, I tried out his natural language concept for setting a new filter. It was quite fiddly to do but I really think it's a much smoother experience than conventional input methods.
I've made animated prototypes for my General Assembly UX Design project, here's a video showing me using it, and the steps to make your own. It's pretty fun!