Armstrong — who didn't get the credit he deserved as a writer back in the days of more serious-minded bands like Nirvana and Pearl Jam — has amassed one of the most impressive song books of the last 20 years. His 1996 acoustic ballad "Good Riddance (Time of Your Life)" has become a standard and a pop cultural touchstone; the Who-scale ambition of 2004's American Idiot made for a rock-opera that remains a totemic response to the Bush era; and Green Day's recent three-album trilogy, Uno!, Dos!, Tre!), displayed a mastery of styles from throughout rock & roll history. And Armstrong is a punk through and through: the whole band gets songwriting credit on its hugely successful catalog.