OHAI there. I have all the songs from Jem (including the Misfits, because they need love too) and I play them on repeat every single game I play as Taric. All 200 or so games or however many I played now. My favorite still stands as http://www.youtube.com/watch?v=11VX4rWIWOY .
As for other champs, I have a Lady Gragas playlist for Gragas and a Rush playlist for Mordekudser.