Your Favorite Video Game Songs of All time

What is you favorite video game song? (This can be the intro, climax or ending sequence.)
Ex. Fallout 3-Patriotic Theme

For Me I have three favorites
1. FFX-2 1000 Words http://www.youtube.com/watch?v=4poJJu-ZH-0
2. Kingdom Hearts 2- My Sanctuary http://www.youtube.com/watch?v=CvkvkeEJLjY
3. Grand Turismo 2 (Intro)- The Cardigans - My Favorite Game http://www.youtube.com/watch?v=e701QHyCr0o

Here's mine:

3. Tie: Legend of Zelda (NES) & Super mario bros (NES)

2. God of war series "set the mood of the different environments and situations perfectly"

1. Anything from any HALO "Marty O' Donnell did'nt just set out to create a soundtrack, He wanted to create a masterpiece, he succeeded"

Mine would have to be

1. Battle theme for a pokemon battle

2. Still Alive from Mirrors Edge

3. And B.Y.O.B By System of A Down from guitar Hero World Tour

All time favorite is the Mega Man 3 theme. To Zanarkand (FFX),Casino Night (Sonic 2),Chao Garden (Sonic Adventure),and most of the Banjo Kazooie songs come very close.