Obviously there are some pure classics out there. The most identifiable themes probably belong to John Williams, but I'm just looking at some of the less lauded and potentially, not as well known, that have had a huge influence on me personally.
Number I - "Dances With Wolves" by John Barry. My father took me to see this film when it was released and I fell in love with the story, the imagery and the beautiful music. Here is my personal highlight from the soundtrack:
Number II - "Fright Night" by Brad Fiedel. Rented out on a VHS tape (remember them) way back in the early to mid 90's. Fiedel is generally revered, and rightly so, for his Terminator soundtracks - T1 & T2. But this soundtrack, awash with 80's idiosyncrasies (Fat synths, guitar with a brutally obvious chorus) spoke to me on another level altogether - particularly this piece:
Number III - "Candyman" by Philip Glass. Introduced to this in the early / mid 90's by a good friend of mine who lent me the VHS. I think what appealed to me was that it wasn't a typical horror/slasher soundtrack, it had more of Gothic fairytale vibe to it. My wife bought the vinyl as a Christmas present for me, just gone. Yeah, she's awesome.
Number IV - "The Edge" by Jerry Goldsmith. Ok, so Jerry Goldsmith is immediately synonymous with big budget, sweeping, grandiose soundtracks. Deservedly on a pedestal with Williams, Jarre et al. But I don't think this soundtrack gets half as much love as so many of his others. Bought this on, you guessed it, VHS when it was newly released. Just listen to that from 0.51. It positively soars and takes your soul and breath with it. You can almost touch the Alaskan wilderness....
Number V - "The Last Of The Mohicans" by Trevor Jones. Now funnily enough, the following piece was actually written by Dougie Maclean but is interspersed with the main theme from the film which was written by Trevor Jones. It's a perfect musical marriage. The whole soundtrack is absolutely stunning and well worth snapping up, should you feel so compelled. Nightwish clearly plagiarised the theme for their song "Stargazers". But that's none of my business. (Insert VHS viewing story here)