A commercially successful, critics' darling is oftentimes an oxymoron in music. Then again, it should come as no surprise that the endlessly innovative hip-hop band, The Roots, have managed to accomplish both. They have sold over three million records since debuting with Organix in 1990. At the same time, they've won a Grammy for best rap performance by a duo or group in 2000 for "You Got Me," and kept fickle critics and their loyal fan base satisfied with groundbreaking experimentation that deftly mixes elements from rock, jazz, soul, house, and any other genre that will make the speakers ...