As an opening salvo in what frontman Chuck D promises repeatedly on his audio commentary will be a series, the DVD release It Takes A Nation captures Public Enemy's historic first performance in the UK. And though the hip-hop group's white-sweats-intensive fashion sense hasn't withstood the test of time, its music has. The DVD proves a priceless time capsule of 1987 P.E. style, indelibly chronicling a group whose elaborately choreographed stage show represented a bona fide cultural happening. All the parts of P.E.'s mythology are here, from the Old Testament authority of D's voice to Flavor Flav's manic clowning to Professor Griff sternly doing whatever the hell it is he does.