Caffeine is a nifty piece of software available in the app store for free that prevents your computer from going to sleep or starting the screen saver. Caffeine puts an icon in your dock (which you can remove) and a coffee cup in your menu bar. This comes in handy when you need to run to the restroom and don't want back to a screensaver or black screen. This nifty app also can be used to stop the computer from going to sleep while watching netflix, hulu, or just listening to itunes.
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A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort.
Herm Albright
(1876 - 1944)