DESCRIPTION:
A random idea that popped in my head. I searched YouTube, and only saw a Heavy version, so I decided to do one with Soldier :p
This may have been done already, but fuck it: I don't care.

Here's a MP3 download link to those who can't use YouTube Downloader:
http://www.sendspace.com/file/2o44xm

Lyrics:
(I am going to enjoy killing each and every one of you sorry sacks of scum!)
(I will rip off your ghost head and crap in your stupid hat!)
GHOSTBUSTERS!

If there's something strange,
In your Dispenser,
Who you gonna call?
GHOSTBUSTERS!

If there's something weird,
And it don't look good,
Who you gonna call?
GHOSTBUSTERS!!

Painis, Painis, Painis,
Painis, Painis painis
Painis, Painis, Painis,
(I'm not afraid of no ghosts)
Painis, Painis painis


Painis, Painis, Painis,
Painis, Painis painis
Painis, Painis, Painis,
(I'm not afraid of no ghosts)
Painis, Painis painis

If you're seeing things
Runnign through your head,
Who you gonna call?
GHOSTBUSTERS!

An invisible Spy,
Sapping your Sentry (*snort snort* DAMMIT!)
Who you gonna call?
SPYBUSTERS!

Painis, Painis, Painis,
Painis, Painis painis
Painis, Painis, Painis,
(I'm not afraid of no ghosts)
Painis, Painis painis


Painis, Painis, Painis,
Painis, Painis painis
Painis, Painis, Painis,
(I'm not afraid of no ghosts)
Painis, Painis painis

Who you gonna call?
GHOSTBUSTERS!

If there's something strange,
In your Dispenser,
Who you gonna call?
GHOSTBUSTERS!

(Merasmus, I am going to bust your ass!)
(You cannot bust me, Soldier!)
(CHAAAARGE!!)
(NNNOOOOO!! Soldieeer, you were the woorst rooommaaaaate...)
(HEH HEH HEEH! You cannot run from me, ghosts!)


As a bonus, here's how I'd cast the TF2 characters in a Ghostbusters movie:

Scout - Peter Venkman
Soldier - Ray Stantz
Medic - Egon Spengler
Demoman - Winston Zeddemore
Miss Pauling - Janice Melnitz
Heavy - Slimer
Spy - Louis Tully
Pyro - Gozer
Merasmus - Vigo the Carpathian