Just what was it about the Grateful Dead that made them rock and roll's most beloved band? In Deadheads, those with the real story, who were there and are still listening to the music, explain it all. Grateful Dead lyricist John Perry Barlow talks about his lifelong friendship with Dead guitarist Bob Weir. Cajun chef Rick Begneaud shares his memories of feeding the Dead. John Popper of Blues Traveler recalls playing with the Dead at Bill Graham's memorial tribute .