Eric Clapton's Unplugged was responsible for making acoustic-based music, and Unplugged albums in particular, a hot trend in the early '90s. Clapton's concert was not only one of the finest Unplugged episodes, but was also some of the finest music he had recorded in years. Instead of the slick productions that tainted his '80s albums, the music was straightforward and direct, alternating between his pop numbers and traditional blues songs. The result was some of the most genuine, heartfelt music the guitarist has ever committed to tape. And some of his most popular -- the album sold over seven million copies in the U.S. and won several Grammies.