Andrew Lloyd Webber it's not, ''Starlight Express" notwithstanding. Roller derby isn't choreographed, the bruises aren't painted on, and there are no blue hairs in the audience, just a bunch of blue collars and Pabst Blue Ribbon tall boys.
But still, roller derby is theater. Its fabulous divas wear costumes that rival the loud plumage of ''Cats," with tight fishnet stockings, spiky collars, red hair piled way up, and crosses hanging way down into cleavage. They've taken stage names such as Miss Conduct and Punky Bruiser. And they're all raging drama queens competing for applause as they elbow one another out of the limelight. In A&E's lively new reality series, ''Rollergirls," the fur flies furiously as the girls on the track go round and round.