7. Gov't Mule
If they ever get around to making a Jam Band Hall of Fame, Warren Haynes really deserves his own wing. The guitarist not only stepped into Duane Allman's Allman Brothers role in 1989, but in 2004 he essentially took on the Jerry role in the Dead. For a few incredible years he divided his time between both acts, and in spare moments he has toured and recorded with Gov't Mule. The group merges many of the best aspects of the Dead and the Allman Brothers, and they only seem to get better every year.