Did y'all know that there's actually a Broadway show comprised entirely of Green Day songs? I was watching a documentary about it the other day, and Billy Joel (the lead singer of Green Day) was talking about how he liked their version of 21 Guns better than Green Day's version, so Green Day invited the cast to perform at the Grammys with them (last year I think). Then they re-recorded the track with the cast.
He's right. This version gives me goosebumps every time I listen to it.
I know, I know...I don't often watch videos when people post them on blogs. This is worth it.