At the moment, these two songs:
Touch-Tone Telephone and
Cabinet Man.
The music is dangerously catchy in both of them, the lyrics have been accurately described as "joyously dark", and the vocals are great. According to the media player, I've listened to the first one 21 times, and the second one 15 times...about to be 16. They may be difficult for me to sing, but I do enjoy trying :')