I meant Longhorn's dynamic folders, in terms of Spotlight being similar to Longhorn.
Longhorn has music, document, image, video and game folders, that have all the relative content stored in them, no matter where the actual files are in the folder-structure.
Spotlight's searching, and smart folders are very similar to Longhorn's system. I know that iTunes had those features first, but that was music only. The branching into the file-structure was done by Longhorn first.
Also, Apple is even ripping off Looking Glass in a way. They are running out of ideas. We know they can do better, rather than just ripping off other's ideas.
And, about Dashboard ripping off Konfabulator:
Konfabulator was not the first of it's kind to do what it did, but it was different, with well-implemented tranparencies, customization, etc... And now Apple has introduced a system that is VERY similar to Konfabulator.