The drummer and guitarist I play with have me feeling like I need to up my "jam-band IQ." Problem is, most of what they recommend to me is of interest to them because of great guitar playing or drumming and it's almost always something by phu@#ing Phish. (Nothing against Phish, but they seem like such an obvious choice -- perhaps deservedly so.) So, fellow bass players, can anyone out there recommend anything/anyone within the groove and jam-band "genres" that I should pay particular attention to from a bass perspective? I'm open to any style, any era, as long as there's a good groove, solid songwriting, and a healthy dose of improvisation and/or instrumental work. The more specific you can be, the better. Thanks!