Creating this list involved a couple of judgement calls, but not when it came to Phish. They are the dictionary definition of a jam band. Indeed, since the death of Jerry Garcia in 1995, they have emerged as the premier jam band on the planet. They're so massive they throw their own three-day festivals where they are the only group on the bill. Phans follow them all over the country, obsessing over old tapes and rumors of upcoming gigs. Trey Anastasio is going to spend a week or two this summer fronting the Dead at their final shows, which is really the ultimate honor in the jam band universe.