Okay, well I was thinking a few of these songs might be pretty cool to play:

Avenged Sevenfold - Anything from the new "Avenged Sevenfold" album
Rise Against - Give It All, LIfe Less Frightening, Prayer Of The Refugee
Led Zepplin - Immigrant Song, Kashmir(Might Be Too Long?), Stairway To Heaven
Alexisonfire : Almost any song they have (Mailbox Arson being a personal choice)

Just some quick ideas I thought of after looking at the DLC and the non DLC songs