I have this theory that the songs I instantly fall in love with are the ones that most closely match my mind music -- my involuntary humming and natural, internal rhythm.
This weekend, I heard this song (during the opening credits of Keeping the Faith) and nearly lost my mind, I loved it so much.
It's one of those songs that I know I'll never tire of hearing. Within the first five seconds, it secured a position in the Roxy Hall of Musical Immortality. There are only a few songs that haunt me, forcing me to love them without ceasing -- this is now one of those songs.