Venture capitalist Hunter Walk just spent a day in Kansas City, and he's written a short report on what using Google Fiber is like.
Since Google Fiber is just rolling out, it's not like there's a whole bunch of specialized web products built around having 1GB speed. But when you play with it, the gap between you and Internet totally disappears. The computer is responsive in a manner that I've never experienced before. You can play multiple 4k YouTube videos without buffering. You download 1GB files during a tv commercial break. You just get more done.