An evolving list of movies with great soundtracks (mostly compilations of various artists). This list focuses on the greatness of known and unknown musical artists that touched the ears and hearts of film makers & directors across all genres of film. With the combination of inspiring music & engaging film the whole is much greater than its separate parts.
Other sources:
https://en.wikipedia.org/wiki/Time%27s_All-Time_100_Movies#10_Best_Soundtracks
http://www.rollingstone.com/movies/lists/the-25-greatest-soundtracks-of-all-time-20130829
http://www.filmsite.org/100soundtracks.html
http://time.com/3507121/best-soundtracks/
http://www.nme.com/photos/61-of-the-greatest-film-soundtracks-ever/207108
http://www.imdb.com/list/ls008939186/
http://www.shortlist.com/entertainment/50-coolest-movie-soundtracks#gallery-1