Theres something in windows 7 that organises the windows together, so it sets it up nicely.

It also has encryption enabled for external storage, (pretty good for government people leaving USB sticks with everyones info on in a pub).

Home networking setup's been streamlined so it can see any other windows 7 PC on the home network off the bat (if you want it to) so no fiddeling about, as well as streaming media from one PC to another. That is if you want it to.

On the blue ray side its native to the OS being able to read/write to it so theres no 3rd party software, so it is a good windows thing.

On the window resizing with the inclusion of hi res monitors not having the ability to use all the sides/corners is a pain, I thought I was the only one who uses it all the time.