This (via the Daring Fireball Linked List) is exactly right on the money. Parallels is great software, enabled by a great choice on Apple’s part. I have MacOS X, Windows NT, Windows 2000, Windows XP Home, Windows XP Pro, and Ubuntu running on the same machine, and I never reboot it. The speed of each OS feels about the same, which is to say plenty fast enough. I talked about Macintitis being a problem as we developed CodeZoo; now, instead, Macintitis makes platform testing better.
I don’t think anyone should view Apple’s switch to Intel as an Apple-specific transition. In the same way that browsers are abstracting away many of the problems of cross-platform development at the UI level, a common chip for all popular OSes is making inroads on the opposite flank.