I am using some of the 'down' time this week to clean up my computers, review the applications I have and those I use, and to improve my use of some apps.
One of my favorites and one I use quite a bit, but not as much as I hope to in the future, is Alfred. It's a free application but once you start using it you will want to upgrade to the PowerPack. Basically, it allows you to open and launch and handle folders, files, and other items on your computers by simple keystrokes.
Good resources to get a hint of its power can be found in the Podcast area of the iTunes Store = ScreencastsOnline has a session and there are, no doubt, others.