Brilliant for watching things like Horizon, which always get padded with people walking through doors, and recordings of live football, when you really don't have an hour and a half to spare. After a few seconds you forget it's running fast, though there are occasional people who speak too fast to be quite clear. So the real ideal would be variable speed, selectable between say 1.2 and 1.5. Not HiFi, obviously, but really useful.