Opening with the funky shuffle of "Somebody Else Has Been Shaking Your Tree" and plowing into the Sabbath-like heaviness of "Brown Sugar," ZZ Top's first album is an overlooked classic and the first and last word on drunk-Texan-slide-guitars-shredding-everything-and-Billy-Gibbons-totally-rules-style blues rock, which there just isn't enough of in this world.