Google Desktop for Mac OS X finally saw beta release last week; so far, the beta includes search but not Gadgets. Initial reactions have been tepid amid concern about how extensively the installer modifies your system. Nonetheless, some people seem to like it.
Visor: Brought to you by the wonderful folks who made the incredible Quicksilver, Visor is a drop down terminal for your mac, similar to the quake terminal. Plus, you can use quartz composer movies as backgrounds!
Quicksilver Metaweb is the companion wiki to Neal Stephenson's much anticipated new book. If you've found his home page a bit on the off-putting side, but you still had things you wanted to know, or maybe chitchat about, this is the place for you.
Where in the world is Neal Stephenson? The Web page of Neal Stephenson, author of Cryptonomicon, Snow Crash, The Diamond Age, etc., explains how busy he is writing his new book. (Quicksilver, according to this old interview.) The site's fabulously cranky, and a refreshing alternative to marketing sites for artists and authors, but no further explanation is forthcoming.