Looks fiddly, and useless to most desktop users who arleady have a keyboard and mouse.
Multi touch is one of the many great features Windows 7 has.
The new and improved taskbar really adds a lot of productivity to navigation. It also has other features like Shake and Snap to top and sides for window management.
The Windows Explorer is now more neatly organised. E.g. instead of you figuring out how to manage your cluttered filing system, W7 has centralised folders called Libraries. Much easier to find stuff. You can read more about this at Windows homepage.
The search actually works (well so does Vista) and is bloody fast compared XP's pathetic stupid dog which doesn't really find anything. I still find that dog bloody annoying.
The Wifi/Bluetooth support is much better.
No need to search for drivers when installing new hardware. All you need to do is connect to the internet and Windows will do everything for you.
System is very stable and feels very snappy. No random crashes or BSOD. The services that run in the background doesn't affect my running programs at all.
There's more but overall, I am impressed with 7's new features. It definitely won't generate more clients or money for you. Definitely won't make your balls bigger and girls swinging around you too. If these features are what you are looking for, then you should upgrade to Windows 7. Hope that helps. Cheers!