Broadway Idiot follows Green Day's Billie Joe Armstrong from a punk rock concert at Madison Square Garden to the opening of his musical American Idiot on Broadway - only ten blocks away, but worlds apart. From behind the curtain share in the crazy journey of turning the mega-hit album into a punk rock musical - and ultimately see how the world of theater transformed Billie Joe.
| Actor | Role |
|---|---|
 Billie Joe ArmstrongSelf (archive footage) | Self (archive footage) |
 Michael MayerSelf (archive footage) | Self (archive footage) |
 John Gallagher Jr.Self (archive footage) | Self (archive footage) |
 Michael EsperSelf (archive footage) | Self (archive footage) |
 Mary FaberSelf (archive footage) | Self (archive footage) |
 Rebecca Naomi JonesSelf (archive footage) | Self (archive footage) |
 Christina SajousSelf (archive footage) | Self (archive footage) |
 Stark SandsSelf (archive footage) | Self (archive footage) |
| TTony VincentSelf (archive footage) | Self (archive footage) |
 Tom KittSelf (archive footage) | Self (archive footage) |
 Steven HoggettSelf (archive footage) | Self (archive footage) |
 Andrew CallSelf | Self |
 Declan BennettSelf | Self |