We've seen plenty of different input devices
, but it's pretty hard to displace the traditional keyboard and mouse combination. Touchscreens have their usefulness (but perhaps not on a 20" 4K display), and maybe someday gesture recognition will be more common outside of gaming. Ultimately, we're likely to see more and more options for how to best interact with various kinds of software, and that's a good thing. Here are just a few more examples of cool digital interfaces.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post