Well Greenday is the band that forced the title punk. There were bands out there that played the same kind of formula, but greenday was the mostrecognized. they unfortunately opend the flood gates of hell to all of the punk bands we have to day..."shivers" Anymore though, you cant call Greenday a punk band, i think like the punk scene they grew out of that shit. American idiot is kind of soft, but a good album. As long as they dont take another damn four years to produce another album, i'll probably stay a greenday fan.