Ever hear of a rock musical that actually rocked? John Cameron Mitchell's glorious adaptation of his acclaimed Off-Broadway show might be a first: This bittersweet chronicle of the few ups and many downs of a transsexual, would-be rock and roll superstar not only works brilliantly as a musical, but also features some of the best rock songs ever written for the theatrical stage. The tunes, by the very talented Stephen Trask, run the gamut from stomping glam-rock and spiky punk to sing-along pop (just follow the bouncing wig!) and soulful ballads, without ever striking a false note. Mitchell, who also wrote the script, reprises his star turn as Hedwig, an East German-b...