There is an excellent documentary  called Years In Your Ears out about one of the best bands of the jam band era, Leftover Salmon.  The documentary features tons of live footage and interviews with Yonder Mountain String Band, String Cheese Incident, Sam Bush, Peter Rowan, Béla Fleck, John Cowan and tons of other musicians that admired LoS.  I can remember seeing these guys at Telluride Bluegrass Festival tons of times making the crowd go nuts for many Saturday nites at the festival.  The documentary even includes an appearance by Mayor McCheese!  Each and every Leftover Salmon show was a polyethnic Cajun slamgrass event that put a smile on everybody’s face and got even the most docile people in the crowd shaking their booty.  If you are a Salmon fan or if you just want to know what they are all about, check out this documentary.