ein nützliches Tool für manchen: Isolater

„Isolator is a small menu bar application that helps you concentrate. When you’re working on a document, and don’t want to be distracted, turn on Isolator. It will cover up your desktop and all the icons on it, as well as the windows of all your other applications, so you can concentrate on the task in hand.

Isolator is designed to stay out of your way, and so it isn’t loaded with flashy features. However, it is customizable so you can get it to do exactly what you want. Options include:

Hide the Dock when you activate Isolator (Leopard only)
Customize the background window (including semi-transparency)
‚Hide‘ background windows, as well as covering them up (they’re just covered up by default)
Customize the shortcut key
Disable the menubar icon
Left-clicking the menubar icon can activate Isolator
Automatically launch Isolator when you log in“