<< Definitely a younger crowd here, although it's all just our personal opinions. But I have to second (or third or fourth or whatever it is now) the Beatles. How can you not include them as the best band of all time, even if you don't care for the sound. Other bigges would include the Who, the Stones and U2. But for pure jamming purposes you can't beat groups like the Allman Bros. or Santana and his band back in the late 70s. >>
It's a personal taste poll. What they did for a genre or music itself has nothing to do with it. What only matters is what they do for you. I would never have included Sublime as a best band of all time, but they are my favorite band of recent times.