The eminently quotable Walt Mossberg, writing about the Skype 2 beta in today's Wall Street Journal (subscription required) concludes:
Skype has escaped from its niche and is heading for the mainstream. You might want to give it a try.The Skype 2.0 beta is available for Windows machines only, but will be on other platforms soon.
(I'm user "enrevanche" at Skype, by the way, if anyone wants to chat.)
Skype 2.0 beta (download link)