ScreenFocus is an application that dims your side screens. You don't have to click any button to dim a screen. It's dimmed automatically when you move the cursor away. By default, only the side screens are dimmed. Of course, you can change this option within the app menu.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.