OSX Writeroom like focus mode for other apps?

Question

I like the way WriteRoom let's you focus on writing. Screen black: only a prompt. Is there a OSX utility that makes the same focus mode available to other app. For instance when you are writing an e-mail or iTunes it blacks out the rest of the screen?

Answer 1

Press Cmd-Option-H to hide all other applications. Switch applications by Option-Clicking the new application's Dock icon to hide the previous application.

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Always hide background applications by using tools such as Backdrop or Doodim.

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Dim or hide the menubar by using Menushade.

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Use Mega Zoomer to get "full screen" mode in any application.