This one is a no-brainer.
I voted for Yu-na, her footwork sequence hits every beat of the music! Her overall skating is so gorgeous, so gentle, so precise... especially in the "Lark Ascending". However, El Tango de Roxanne proves that she can skate to the music - so well, in fact, that you might even say that she is the music.
Evgeny Plushenko is #2, his exhibition-version of Tosca is incredible.