Use Finder Windows as Application Launcher
An underused feature of Mac OS X is the ability to use any Finder window as an application launcher. Simply drag any application into the Finder windows titlebar and the apps icon will stick to it, allowing you to launch the app directly from anywhere within the Finder. You can also drag and drop files into the app icons, making this feature even more useful.
To remove launchable apps from the Finder windows just right-click on them and select “Remove Item” to clear the space.