I think of the Beatles as a pop band --great songwriters. Led Zep ...they were good, but they took it too far on many songs ...too pretentious and overdramatic. Hendrix was a solo act --he had musicians that backed him up, but I don't think of the Experience as a band. The Stones qualify as a rock band. Tight rhythm section and Richards was superb rhythm guitar with understated, tasty lead parts. The Allman Brothers were the quintessential southern rockers. Jethro Tull weren't that bad, but they're a novelty niche: the band with the flute guy. Don't forget Nirvana and those Seattle bands. They were great rock bands of the modern era. The Derek Trucks Band is a great modern band in the southern rock tradition. I'm sorry Dru, Neil Young is a great songwriter, but his masturbatory one-note wanko leads with Crazy Horse straight up suck. I did like his two rocking songs on the later album that had "Keep On Rockin' in the Free World" on it. Someone will inevitably mention the Grateful Dead, but Jerry Garcia's voice is like fingernails on the blackboard for me and his guitar work is aimless noodling. I guess I can't decide who the greatest rock band ever is. I just can't decide!