Quicksilver is one tool I can't live without. When I use a Mac without it, I feel handicapped. I've been doing some iPhone development lately, and I am feel comfortable with Objective-C. Yesterday I decided to write a Quicksilver plugin. This tutorial series made it easy. I have made a video using Snapz Pro to show how it works:
You can download it right now and try it out. Like other utilities we make for iusethis, it's free and open source (Artistic/GPL dual licensed). Check out the source from Github.