@Dr Herbie: "I only bothered to watch the first two minutes..."
Yep. ...about 2 min. in. Who has time for this? If there are valid points - and I'm not a Windows 8 adopter -, they are lost in the chaff.
Anecdotally, my 19 y/o son picked up a new Windows 8 laptop and he loved it "it's just like the XBox Interface". No problem what so ever. I'll be watching to see whether he remains happy with it. However, it clearly is not "unusable".