In their fly-on-the-wall documentary "Lost in La Mancha," directors Keith Fulton and Louis Pepe chronicled a doomed dream project -- the Don Quixote feature that Terry Gilliam began shooting in 2000, only to be met with production-crippling bad luck. At least two unfinished films figure prominently in their far more compelling narrative debut, "Brothers of the Head," a work of terrific imagination, visceral punch and gothic beauty. At once lurid and restrained, the '70s-set saga of conjoined twins and their short, strange trip to the rock 'n' roll stage achieves a hard-edged fusion of story and aesthetics.

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