Here are a few videos about headbangs that go from serious to silly.
http://www.youtube.com/watch?v=RwrU67g 3j4g
http://www.youtube.com/watch?v=UEqstD-
P9LA&feature=related
http://www.youtube.com/watch?v=f33RmQR C4_Y&feature=related
http://www.youtube.com/watch?v=nwLIsSS eguA&feature=related
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