The trouble with these massively fast connections, like the one I posted from work a while back, is that the rest of the Internet, and all of the servers, can't really deal with it yet anyway, so it's only for these very artificial cases, where you're just talking to a very close, from a network perspective, machine. I know that my few Mbits/s ADSL link is only slightly slower than my work connection for most day to day purposes.
It only becomes useful when you're using a fast enough machine that it's useful to stream HD video, or you're transferring a lot of data, full memory cards from a camera, or lots of video files (both of which I've done recently!) Most of the time it's unimportant, but occasionally it's useful.