It's great to see Rodrigo Y Gabriela and Primus on these lists! I also would recommend listening to Bela Fleck and the Flecktones for rich bass and diverse dynamic ranges (Kaleidoscope is a particularly colorful song). Mumford and Sons' album Sigh No More is also FANTASTIC on any good setup. There are diverse acoustic instruments, vibrant vocals and generally pounding kickdrum that will test any system's bass. I had started to list the best songs on this album, but I stopped when I realized I was listing every song.
