Appearing on public television channel WGBH’s “What’s Happening, Mr. Silver?”, “the first TV show that spoke to the stoned generation,” Mel Lyman, a former musician in Jim Kweskin’s Jug Band who had become the guru of the Fort Hill Community in Boston, was asked if 1968 was a holy year and he was its avatar. “Sometimes, I am the avatar,” Lyman said, “and sometimes, I’m asleep.”