My favorite band has been Bowling for Soup for a long long time, but recently Garfunkel and Oates have been stealing that title. Though you may consider Garfunkel and Oates and artist. *shrug*

With Bowling for Soup it is the way they tackle controversial issues and the world in there music in a way that both makes you laugh and think that thrills me.

My favorite song changes rapidly and constantly but right now it would be According to You by Orianthi.

My other favorite would be the full version of Reflections from the Disney movie Mulan, because it tells the story of my life in a way that makes one listen and understand.

Edit: Another song I adore would have to be Anthrax by the Moldy Peaches it is a song about 9/11 but unique in the way it is put together.