Disable Screensaver

So you're trying to watch a movie on your shiny new corporate laptop. Ten minutes into the film, the automatic screen saver kicks in, locks the machine and forces you to re-login. The little weasels at IT have even disabled the screen saver properties, so you can't even turn it off.

Here's a tiny python script that will fake keyboard activity every five minutes in order to prevent a screen saver from activating.