1: Multi-Touch Support: Windows 7 is having a multi touch support, and there are gestures for common mouse actions like dragging and right-clicking, that work throughout Windows 7 and applications like Paint and Microsoft Earth. Also there is a on-screen virtual keyboard.
2: Windows 7 Taskbar: The Windows 7 taskbar is not the cluttered one like that of the Windows XP, infact it is the best taskbar in the history of the Windows operating system. It organises beautifully all your opened windows and allows you to get a live preview of the minimized window in the taskbar when you hover the mouse on them. You can even see a full screen preview before switching to the window.
3: Customizable UAC: User account control in windows 7 is customizable with which you can change the frequency of the notifications according to your comfort level with the notifications.
4: Portable Drive encryption: Windows 7 has a smart application called BitLocker(also present in Windows Vista) that encrypts the portable data drives and fixed data drives. Data that once encrypted, can be accessed only with the help of password that was used for the data encryption.
5: Easy Home Network Setup: Setting up a new home network in Windows 7 is quite easy. You can now connect to a new Wi-Fi network with a couple of system track clicks rather than dealing with an entirely new windows.
6: Faster & Easier: Windows 7 is faster than Windows Vista & XP due to less start up and shut down time thereby leading to the much enhanced battery life.
Though the above mentioned features are indeed some of the key features but we would be glad to know how you take these features. So please drop in your comments if you have something to say.