Your Theme.

[Lily Rock]

Do you have a Theme song or OST that you'd love to have played around yourself or in your head, but not too high to make it lessen your hearing, like it was behind every other kind of sound, you just decide when to listen.
Myself, I would love to have Hell March, Culling of Stratholme General Theme(from the Old Stratholme from WoW), A few of the Lord of the Rings Soundtracks(but not those blood-pumping one's, lol) and probably "Oh Thanagor"(another Warcraft Theme, for Arthas).

[-GAZKUL-]

St Jimmy by Green Day

[Ghost]

Spacebounb Emienem

[under the rain]

The Master from the Code Geass Soundtrack or The General's Suite (the latter half) from Patton.

[genesis1212]

theme? lets see it would be this FF7 crisis core sound track SOLDIER battle^w^

[Skilero]

This is my theme song.
Watch it, and relish in my greatness.
Now.

[SigmaSD]

Devil May Cry 4- The Time has Come.

[Kyubi-no-kitsune]

i would have to say i have 3 songs
TNT AC/DC

Kung Fu fighting

Sengoku Basara op

[TheAsterisk!]

"The General's Suite" (the latter half) from Patton.

You've pleasantly surprised me!

I suppose my choice would have to be "Does It Really Happen?" by Yes. The instrumental conclusion is the part I'd consider my theme, were I so impressive to deserve the honor.
(A quick Google search will let you listen to it (once) via Myspace Music.)

[Fuu Kasumi]

"Human" by Darren Criss

[The_Angry_Princess]

hmmmmmmm I do lets see its Dat Girl by: Flo Rida

[Hanamaru Kunikida]

BlazBlue: Continuum Shift II. <--Best Video game Opening.

[under the rain]

I'd like to add Forces by Susumu Hirasawa and Soldiers of the Wasteland by Dragonforce.

[Aleyna]

This theme song gets stuck in my head often.

[Uta-chan~]

[Light Buster]

"Watercolour" by Pendulum, although I perfer the full length over the music video.