GOTY

http://www.bloodbathsoftworks.com/xylemon/xlennart.php

Yet again, the fate of the world is in your hands! An evil computer hacker, known only by his handle 'Lennart', has created the ultimate comuter virus. A virus so powerful that it has the power to transmute an ordinary computer into a toaster oven. (oooh!) 'Lennart' has cloned himself into a billion-jillion micro-Lenns. Their sole purposse is to deliver the nefarious virus, which has been cleverly disguised as a popular init system.
As system administrator/exterminator, your job is to keep Lennart from succeeding at this task.