text_a: does what a fine documentary does best : it extends a warm invitation into an unfamiliar world , then illuminates it fully and allows the larger implications of the journey to sink in unobtrusively .
text_b: mixes likeable personalities , inventive photography and cutting , and wall-to-wall toe-tapping music to paint a picture of a subculture that is at once exhilarating , silly , perverse , hopeful and always fun .