I found a neat page that compares the Windows, Mac, and Linux computer desktops over the years. Pretty cool, but they’re missing a few other systems including IBM’s OS/1, BEOS, and the Amiga desktop. Click here for the link.
By the way, be sure to compare the Mac screenshots with those of KDE (Linux). I think some diehard Mac lovers will be surprised that the KDE desktop matches pretty closely with the Mac. For the final year listed, it’s hard to see that many differences between Windows Vista, Mac, and KDE. IMHO.