I agree Windows' filmstrip for viewing a folder of images is handy.
For those Mac users with Tiger you can now see a slideshow of images right in the finder. Select all the images you want to see, then [your choice: click Action button, right-click, control-click] and select Slideshow. Nice little preview with back/forward, play/pause, and a handy Expose style index sheet. Not quite the same but handy nonetheless.
Every other suggestion in the article is terrible.
What OS X Could Learn From Windows
What OS X Could Learn From Windows