Whats the coolest sounding movie?

For overall effect?

ROCKY HORROR!

Great rock, excellant acoustics and the sound effects from the tap dancing is pure heaven.

You want great bass, check out the thunder as it embraces Rif-Raff's singing through the window.

Tombstone and Terminator 2

Das Boot Director's Cut. It was released a few years ago. The sound is not showy with whiz-bang effects. The soundtrack absolutely puts the viewer inside that hot, stinky, leaky submarine. A must-hear Dolby Digital surround mix.

T2, still.

The Hit
with John Hurt and Terrance Stamp has very nice acoustical guitar and an excellent movie to boot.

Dead Man
with Johnny Depp has a beautiful soundtrack by Neil Young if you like a haunting electric guitar, this is also a very good (Jim Jarmusch) movie.

I just reread the original post and I am not addressing the question but I will leave these suggestions.

I second Das Boot :)