It looks like it's obligatory to talk about Windows Vista on your blogs this days.
I will not go down that road, but I would like share with you the part of the new Windows you will look at all the time, if you like it or not. The new Microsoft online and print fonts, the C gang: Calibri, Cambria, Candara, Consolas, Constantia, Corbel. A while ago, Poynteronline wrote about this fonts in detail. (both images are from that site)
I especially like Constantia, since is really easy to read and has a style. It just became default font in my email an IM program.
Consolas should be our new programming font, but I don't think it's ready to substitute my current favorite proportional font - Bitstream Vera Sans Mono.
Of course, you don't have to wait for Vista to arrive, someone has already put the fonts up for download (while it lasts)! (It is probably not legal to download, the fonts may also be pre-release version.)