What is your favorite boss theme?

[BludSpammd]

http://www.youtube.com/watch?v=8tx6h2lDw4I
Doopliss from Paper Mario - The thousand year door

[AaronMk]

Big Sister

Battle for Columbia

HaHaI'mPushingAShoaAsGermanyAndYouCan'tStopMe.MP3

HaHaI'mPushingAShoaAsGermanyAndYouCan'tStopMePart2.MP3

And since this is a boss theme thread, these songs go without saying:

RULES OF NATURE

(Why is Mommy and Daddy fighting) Only Thing I Know For Real

Stranger I Remain

Memes theme

Red Sun

GiantRobot.mp3

It Has To Be This Way

[MoonBunni]

OoOOoOoOoOoh my gooood

ANYTHING...and I mean anything.. from the Bravely Default soundtrack. "That Person's Name Is..." "Serpent Eating the Ground" just... all of them.
Just listen aaaaa:

[AaronMk]

Going to add some more to my list...

And this
Post Merge
And now that I beat Wolfenstein, I can add this to my faovrite themes list:

[sact3rnlang3l]

[AaronMk]

Just remembered another tune.

[Randam Saiko]

[Zsaszz]

When this soundtrack starts, you realize that you're not fighting just a low class mob or average boss, you're facing Alex Mercer, and is him....or you.

[Jenzy]

[Dream Bolt]

Favorite boss theme? Well, there's this:

Makes you feel heroic, like you're going super, too.

and this,

Even the haters can't deny the Sonic 2006 game had good music. Well, the sensible ones.

And one cannot deny the wonderful music of Kingdom Hearts:

Now if Utada Hikaru could only do a vocal song for some big final boss fight. Sanctuary is the first thing I heard when I ever played a Kindom Hearts game, and it was so beautiful and touching that that is what really made me get into the entire series.

[Cormac117]

Dark Pit's Theme. (Can't find how to post links.)
It's just so awesome! 

[kindomhearts98]

Out of the 3 times you fight him this one is the best theme!

[waaaaaaah]

This is best boss music
http://m.youtube.com/watch?v=U-MIN-3vIHQ

[Tiger]

I gotta say that I absolutely love the battle music for the three legendaries in Pokemon Emerald.

I can't get a link right now because I'm in school, though.

[Chromastone64]

It's a really hard choice: either something from Metal Gear Rising, ANYTHING from Bravely Default, or this:

SO. MUCH. AWESOME. I CAN'T GO BACK TO THE ORIGINAL VERSION.

[-ReiMar-]

[Zsaszz]

Spoiler: Spoiler of bayonetta last boss. don't open it if you haven't beat the game yet • show

Jubileus Boss theme

Spoiler: Same as before, Asura's Wrath spoiler • show

Augus Boss theme(New world symphony (symphony no.9) composed by dvorak)

there are some boss sountracks in DMC3 that i would like to put, but their lyrics are a bit mature, so i can't, but it have some really good boss battle themes.