Q. Where do you think will you find an amazingly crafted code that would give priority to a Screensaver over a Keyboard/Mouse interrupt? No Kidding. Think.

Ans. If you guessed it to be an Operating System designed by the Redmond Giant, you are stupid. It’s not something to be guessed.
I just posted to let you know that I experienced this amazing feature when a (stupid) piece of Java code (along with Winrtgen, Cain’s Rainbow table generator) resulted in 100% of System process usage.
Lucky me