I have always been a fan of Flamenco and Nuevo Flamenco and there is a whole world of bassists that are absolutely incredible in there technique, passion and virtuosity.
Carles Benavent seems to the originator of the form.
Here he is with Paco de Lucia.
There are quite a few players to check out.
Ah, a whole other world of sounds, modes and non western classical harmony and notation and something to pursuit when I finally can get back to home in Catalunya.