For all of us technical PC users we just love Ctr+Alt+Del, it is such an amazing feature that should be in any operating system (maybe that is why I do not like Apple).
Ctr+Alt+Del allows you to just kill any application or operation you do not like OR even just wipe out your memory and restart the system fresh.

Ctr+Alt+Del comes so naturally that it is the first thing that comes to mind when faced with any real life issues.
Take for example Education, the system is just so tangled and resources...