Pearl Jam Twenty might be the soundtrack to Cameron Crowe's documentary, but the two-disc set also stands on its own as a look into the band's lengthy career. The first half consists of live material. Some of this stuff goes way back, like the version of "Alive" recorded in 1990, when the band still went by the name Mookie Blaylock. There's also a cover of Mother Love Bone's "Crown of Thorns." It's the second disc that has the real gems, a smattering of demos from the early '90s that reflect the significant amount of overlap that existed between Temple Of The Dog and an early Pearl Jam.