I raved a bit about Microsoft's Power Shell on the show, a while back, and it seems Hotwire is inspired by that.
The command line is handy. Everyone knows that. And it is also supremely powerful. Miscrosoft's Power Shell extends that and Hotwire does the same.
This is not the end of the story, by any means. This is just the first tentative steps in really revolutionizing the command line.