Oops! My first request in Beethoven.com was actually the "Imperial March" by John Williams. It was rejected because someone already requested it the day prior. But Nicole was nice enough to play my alternate request, which was Mozart's Symphony No. 40, and even played the entire symphony!
As far as the soundtrack / classical argument, I did study music theory a bit on my own (mostly for guitar solo improvising). I can recognize a blues 12-bar progression, or notice that Santana will play a solo in the Mixolydian scale, or observed that Jimmy Page de-tuned his acoustic guitar on purpose to achieve the desired music texture (i.e. Black Mountain Side), or follow the arpeggiatic notes of Yngwie Malmsteen emulating Paganini. I do not claim to be a master of music theory, but I do have enough knowledge to be dangerous, I guess.
From my own observation, classical music is a rigid form of music for its own sake that strictly follows the rules of its genre, whereas soundtracks are more fluid and conforms to the demands of the film it was made for. I believe one form of music is not superior over the other, and it really depends on the listener. I am an avid fan of Bach, Mozart, Stravinsky, Brahms, Beethoven, and Tchaikovsky, but also adore the works of John Williams, James Horner, Marty O'Donnell, and yes, even Randy Newman.
To each his/her own.
Thou shalt not re-invent the wheel, unless thou knowst repulsor-lift technology.