"SAME LOVE"
The fact that a song with clever and thought -provoking lyrics like Mackelmore & Ryan Lewis' "Same Love" can reach No. 1 in my country (Australia) is gratifying. We don't have same sex marriage here yet, but songs like this (and the mass appeal of it) all help further this very important cause. 

http://www.youtube.com/watch?v=hlVBg7_08n0