The self-titled Rodrigo y Gabriela is an amazing album. Acoustic guitarists Rodrigo Sanchez and Gabriela Quintero have a created a sound that defies easy description. Their web site says this: "Their music is difficult to define, straddling both world and rock, and often imbued with timeless Hispano – classical influences. The fire in it comes from their life-long passion for metal music."
My favorite track on the album would have to be, well... every track on the album. Listen to a little of it over at their site, on the video clips page.
A few reviews for you here, here, here, here, here, and here.