What is the best movie Main Title theme?

[Fajita Jim]

And why is it Terminator 2?

https://youtu.be/CnQm2_cAZvo

[gugnihr]

I love so much this one

https://www.youtube.com/watch?v=gjtkXM994QE

Other than that there are a few themes that I can think of, all of them are from movies that I like (or at least from movies that I would want to like...) except one, the Jurassic Park main theme.
And since I don't like Jurassic Park and I could not care less about it the fact that I like its theme is the proof that it is really really good, I think.

https://www.youtube.com/watch?v=D8zlUUrFK-M

[Grynn]

https://www.youtube.com/watch?v=k3fz6CC45ok

...or pretty much anything from the 80's.

[Goggles]

https://youtu.be/ST2H8FWDvEA
Can't believe no one has posted this yet!

[L1qu1dator]

https://www.youtube.com/watch?v=ku7qnh261CY

[moon]

Not sure about main title/opening scene or w/e but this

https://www.youtube.com/watch?v=JZ0VLebj3fk

[Alix]

Assault on Precinct 13.

[AgentNeebs01]

https://youtu.be/cVq4zJ1WbaQ

[Revalopod]

today in csgo everyone was shooting their gun in time to the terminator theme
it was amazing
so that is the reason why OP

[Sam]

There are quite a few very good iconic themes. Here are some of my favourites.

Miklos Rozsa, Ivanhoe, 1952
https://www.youtube.com/watch?v=nHqoVTbK94g

Ennio Morricone, The Big Gundown, 1966
https://www.youtube.com/watch?v=m6IJKSsJVds

Ennio Morricone, Navajo Joe, 1966
https://www.youtube.com/watch?v=hN1bJqU50iA

Goblin, Suspiria, 1977
https://www.youtube.com/watch?v=pins1y0XAa0

Jerry Goldsmith, First Blood Part 2, 1985
https://www.youtube.com/watch?v=UgwRR5waHw8&list=PL7v_KFM4xhO1G7ZTou00B8ozw2r52ymAb&index=2

Basil Pouledouris, Robocop, 1987
https://www.youtube.com/watch?v=O_AkU8wJ1ZA

[highfivingbears]

I'm of the mind that it's either Star Wars or Lord of the Rings. Both of those main themes are utterly iconic.

[Masque]

Ang Lee's "Hulk" or Tim Burton's "Batman".

https://www.youtube.com/watch?v=8RSyo8yeg9U

https://www.youtube.com/watch?v=kRZAk2rfESU

The first one sort of reminds me of the music from Kingdoms of Amalur: Reckoning.

Batman reminds me of how we put it on a loop while tripping one night, in a house with colored lights in each room. Batman music was in the green-lit room. Hendrix and Floyd were in the purple-lit room.

[Rumpelcrutchskin]

80s movies had best themes and overall music, all the iconic stuff like Terminator, The Thing, Conan the Barbarian, Robocop, Blade Runner etc.

[dobrowol]

Warriors come out to play...Warriors come out to play

[RRW359]

Road to El Dorado.

[DeadlyDialga]

https://youtu.be/FGZH5feaxa0
Beautiful animated and thought provoking movie regardless of you’re religious or not. The intro scene really puts into place the setting and scale of things.

https://youtu.be/xXlj8-a2UlY
A perfect theme to what was supposed to be the last Godzilla film. Truly the end of an era. The intro to the garbage 98 film is surprisingly good as well.
https://youtu.be/59OBKJZup_U