For the first time in a year, Green Day got together for a jam session, and to celebrate the occasion the band posted a picture of the gathering on their Instagram account.
Often imitated but never duplicated, Green Day blew open the doors for neo-punk and pop-punk in the '90s before redefining the genre for the new millennium.
Ringo Starr, Joan Jett and Green Day are among the next crop of new inductees into the Rock and Roll Hall of Fame -- and not surprisingly, they're all feeling pretty good about it.