Formed in 2003 by brothers Joel and Ryan O'Keeffe, Australia's Airbourne harken back to the glory days of heavy rock, when bands like AC/DC and Thin Lizzy ruled the school. Their 2007 debut, Runnin' Wild, earned them radio play and slots opening for Kid Rock and Korn, and they've kept the rock swagger going ever since. For fist-pumping anthems full of sing-along choruses and hip-shaking rhythms, it doesn't get much better than this.