Here is a small list of some of the features not found in other versions of Windows that I found nice (these were also posted on the new Vista page slowly getting created).
* Windows Aero, a completely new GUI and unlike any previous version of Windows.
* Basic file backup and restore.
* Improved DVD support with the ability to easily create custom DVD movies.
* Easy transfer, a feature that allows you to easily transfer files from an older computer to the new computer.
* File encryption.
* Instant search available through all Explorer windows.
* Support for DirectX 10.
* Self-healing, the ability to automatically detect and correct problems that may be encountered on the computer.
* Shadow copy, a feature that allows you to recover deleted files.
* Improved photo gallery and control of photographs.
* Windows Sidebar and gadgets that allows you to add an almost endless list of different gadgets.
* More parental control.
* Improved Windows Calendar, with the ability to set tasks and appointments.
* And much more.
The widgets are pretty interesting, fun, and amazingly even useful. Really like the ability to show the sidebar (showing the widgets) anywhere in Windows. The search ability almost everywhere including on the actual Start bar is also very useful.
Unfortunately however driver support (at least for the majority of computers here) is still lacking. I was hoping that after beta it would be better but still have one computer without sound (no c-media vista drivers at all), another computer with issues with the SiS chipset on a motherboard, and another with ATI drivers (or at least what Windows Vista is reporting), think it's also another chipset issue.
REALLY dislike all the prompting for entering sections such as Device Manager (ie: clicking on the Device Manager, you get a prompt asking if Windows has your permission to enter Device Manager). Sure however this can be disabled, and once I can play around with Vista some more instead of doing all the troubleshooting I'll figure it out.
At the moment that's the best description I can give you, unfortunately most of the time I've spent with it now is installing it on computers and updating Computer Hope information.
Hope that gives you something of what you were looking for.