Anything by Rise Against. The energy and passion in their music is top notch. A good majority of my plays are Rise Against. But lately they have one song that has been constantly in my rotation, Elective Amnesia. It was a bonus track that I believe was only available on Itunes in the UK, but I found it. You can find it on YouTube, give it a listen, even if you haven't listened to Rise Against. If you like rock/punk at all I guarantee you'll dig this song. Listen to it! NAO!!!
In addition:
Kings of Leon - Closer
Rise Against - Collapse, Re-education (Through Labor), Hero of War, The Entire Suffer and the Witness Album
Clint Mansell - Lux Aterna
Coheed and Cambria - Welcome Home