It always baffles me how long it takes for Windows to search for a file while the GNU's `find` command churns through filenames and paths like it's nothing.
Windows Everything finds any file globally in the blink of an eye, let's you sort in real time by size/date, live-edit your query, and also perform operations on the result in the list, so much better that any find
It's highly optimized, but it still needs quite a bit of RAM when the index is large. But RAM is cheap nowadays.
It's the only thing I really, really miss when I am on Linux. (there is FSearch, but it's not quite as great, yet)
Losing Google Wave, then Google Desktop search and then Google Reader like shot ducks in a row truly signified the death-knell of "Don't Be Evil" days.