Can I nominate 'Christie Lee' from Billy Joel's 'An Innocent Man'? He released half the album as singles, but somehow missed that song. The lyrics are clever and the music delightfully lustful.
Good song. Continuing with Billy, I would put "Summer, Highland Falls" from Turnstiles
and "Vienna" from The Stranger
on that list. Not even close to the most well known songs on either album, yet my favorites on each respective album.