A programmer's modifications for efficiently operating a Mac

I have to heavily second the Quicksilver.app recommendation. I can't really use OS X without it. Here's a link to the latest build of Quicksilver <a href="http://github.com/downloads/tiennou/blacktree-alchemy/Quicksilver-b58-3841.tar.gz" rel="nofollow">http://github.com/downloads/tiennou/blacktree-alchemy/Quicks...</a>

How can an article talking about this not mention automator?<p><a href="http://www.apple.com/downloads/macosx/automator/" rel="nofollow">http://www.apple.com/downloads/macosx/automator/</a>