If any artist exploited MTV and music video to its full extent, it was Madonna. Duran Duran may have been the first video stars, but Madonna was savvy enough to redefine her image with each video, not just each album. All of her major videos between 1983 and 1990 (with the exception of her first, "Burnin' Up," and "Justify My Love," which was one of the new tracks on the greatest-hits The Immaculate Collection) are included on the video edition of Immaculate. Images from the videos -- the gondolas of "Like a Virgin," the Marilyn Monroe homage of "Material Girl," the faux-Blade Runner "Express Yourself," the taboo-shattering "Like a Prayer," the sleek, stylish "Vogue" -- have not only become part of pop music history, but of pop culture, and that becomes apparent after watching this collection. It's truly astounding to watch the videos back to back, as it confirms that Madonna always knew where she was going, visually and musically. The singles were benchmarks of pop music in the '80s, and if anything, the videos are even more important. This is what mainstream pop was all about in the '80s.