Vista

Call it what you will and wait for it until you are old and grey, but it continues to look more impressive. There are some very neat little touches and the longer it takes to get to the channel, the more computers there will be that can run the thing.

All the old friends are there like the old Windows 3.11 Alt Tab but now thanks to the funky graphics people, it looks even cooler to change apps. Previews of other apps, animation, voice activation and loads of other stuff you might even need.

Just don't try to voice control your MP3 collection. In fact turn off the voice control all together otherwise you may find yourself chatting to your mother on the phone and accidentally sending an email of resignation to your Boss. But only if you train the app first :-)