The themes that Windows 7 comes with are pretty cool. Personally, I'm partial to the "Scenes" theme. If you right click and go to "personalize," where the themes are located, and click on "get themes online," you can find additional themes on the Windows site.
I guess so. I just think that I've seen other graphical designed software from Microsoft and think they did a poor job with their Windows 7 graphics. They did a wonderful job with the Xbox 360 dashboard design. I like gradient designs better than aero. Yes, that means I like the Mac OS X theme.