Psychedelic guru Timothy Leary is your host for this documentary, which chronicles a 1989 concert that reunited several of the acts who played at the fabled Woodstock Music and Art Fair, along with several other artists who rose to fame in the late '60s and early '70s. 20 Years After: A Woodstock Reunion Concert includes performances from Melanie, Country Joe McDonald, Canned Heat, Blood, Sweat & Tears, Mark Farner (formerly of Grand Funk Railroad), and more. ~ Mark Deming, All Movie Guide