Numerous compilations of '70s soul, funk, and fusion have been compiled in the name of blaxploitation throughout the years, whether or not all the inclusions were actually used in blaxploitation films (granted, just about everything from this era was fit for soundtrack use). Union Square's The Best of Blaxploitation retraces a lot of familiar steps, but it's not as if most of the similar preceding compilations have remained easy to find. It's three discs in length, so it's bound to plug some significant gaps for beginners and moderate fans, and it contains some concise and informative track-by-track notes. It plays it straight, for the most part, with no revelations made for the hardcore collector. Highlights include James Brown's "The Boss," Marvin Gaye's "'T' Plays It Cool," Syl Johnson's "Different Strokes," Cymande's "Bra," and, naturally, Curtis Mayfield's "Superfly."