1. Zune HD. I don't really know if the actual product is good, but as long as the don't release it in Europe it will be a failure.
2. Silverlight 3. Anything better than flash is always good. Optimize it and make it compatible with Linux, the product itself will be a win. But it might be very hard to remove flash from there.
3. Office 2010. I don't really see the point to upgrade. But it will sell anyway.
4. Windows 7. Better performance compared to Vista, a win .
5. Azure. No idea, will see how it goes.
6. Natal. Difficult to know if it is going to work. I don't really believe it, not impressed.
7. Streaming music. That's always good, but I don't use those kind of services.
8. Updated 360 Dashboard. Always good to have new features, it won't matter for hardcore gamers tho.
9. Win Mobile 7. If the improvment is as big as Win 7, it's a win.