On the surface, looks like yet another applauncher for Mac OS X. But it does a whole lot more. Surpasses Windows PowerPro as the greatest interface addition to an OS that I’ve ever worked with. The first thing I install on a Mac.
Stuff that Quicksilver replaces
A node in my wiki that lists all of the other pieces of software for Mac OS X that can be replaced with Quicksilver.
A very nice introduction to Quicksilver from the good folks at Lifehacker.
Another guide to Quicksilver from MacRumors.
An intermediate tutorial on Quicksilver.
Even more totally amazing things you can do with Quicksilver.
From LifeHacker, a look at some of the more advanced features of Quicksilver.
from A1c0r himself (flippers and all) on the basics and philosophy in Quicksilver.