Anji (Davey Graham et al) drives my wife nuts. Probably cos I spent 2 months getting it sorted and played it about every day. :-)
And how come no-one's mentioned Streets of London, or Wild Rover, or Whiskey in the Jar? Or The Leaving of Liverpool, Clementine, Walzing Matilda? Pretty much every folk song has some origin which was once relevant and possibly controversial, but now there's kiddies singing them the same as Three Blind Mice.
"The world has moved on, gunslinger..." - Stephen King
Moving away from folk a bit, how's about Moonlight Shadow (Mike Oldfield), Brothers in Arms (Dire Straits), Road to Hell (Chris Rea), Wicked Game (Chris Isaak)?