Mac has voice recognition, GREAT graphics; dock, buttons and everything, doesn't get viruses, very fast, the latest one Mac os X 10.4 Tiger has widgets etc, Great for Video Editing with Final Cut Pro, just 'State-of-the-Art'
on Linux and Solaris you have to manually install software dragging and dropping files in the right directories, that tells us a lot about these OSs...
Windows on the other hand is ok for games, although it is a virus magnet, that 'crashes' all the time...