Found in Ervi blog which i think is pretty interesting

try the 3 Magics on your com now!

* Magic 1

You can never create a folder anywhere in your com with the tittle "con"

dont believe? try it!

* Magic 2

Open the application Notepad.. Not wordpad.. is notepad

type "Bush hid the facts" (without the quote)

save it in my documents.. and close notepad.. locate the file and open it.. what do you see?

* Magic 3

Open Mircosoft words..

type

=rand (200, 99)

press 'Enter'

what did you get? even Bill Gate cant solve why this happen