] Quicksilver is an evolving framework for accessing and
] manipulating many forms of personal data.
] Existing modules include a launcher, a clipboard
] recorder, and a shelf.

This is a truly awesome launcher app for OSX. Using keywords you type in, it launches a dynamic menu for picking to launch apps, open documents, visit bookmarks, etc. Its that much less you have to take your hands off the keyboard.

This may be the latest must have app for OSX. I continue to be very pleased with the overall evolution of OSX as a workstation platform.

Blacktree - Quicksilver - Mac OXS launcher