I'd love to hear some of the songs that simply knocked you off your feet. These can be songs that bristled in beauty, uniqueness, sheer workmanship or whatever.
There are so many songs that have done all of the above for me, but the one that most recently stopped me dead in my tracks is this absolutely beautiful love song by DeEtta Little and Nelson Pigford entitled You take my heart away, which also appeared as background music in a scene from Rocky.
https://www.youtube.com/watch?v=tao_q53LWdc