I've now got WorldWide Telescope installed. The download and install was fast and painless and I was up and running in no time.

My initial impression? Wow! It's nice. Very nice. Very, very nice. It's easy to navigate, things feel like they're set out in a pretty logical way. Things like the little tray of "bookmarks" along the bottom of the window, which change as you move around the sky, are a very nice touch. I also like that you've got the ability to view different planets in a...