As iconic as the Final Fantasy series soundtrack is, I've always made the argument that its hard to judge if you've played the games because you have to ask yourself; "Was this song REALLY that good or was it the associated emotion from the games plot that makes me like it?"
The soundtrack is also highly derivative. Jenova's theme "J-E-N-O-V-A" from Final Fantasy VII is clearly, at the very least, "inspired" by the ending theme to the film "Blade Runner", which was scored by Vangelis. The motiv from Sepiroth's theme "Those Chosen By The Planet" sounds eerily similar to parts of "Music for the Funeral of Queen Mary" (a synthesizer version was used as the intro to Stanley Kubrick's film adaptation of "A Clockwork Orange")
And now I think I've found yet another one:
I know the intro in this song is almost identical to a final fantasy song, but I don't remember which song or game. Anyone have a clue?