now ,I will give an example of a song which Ithink is in the mode E DORIAN,The song is BUSHES AND BRIARS,the guitar accompaniment was worked out by messing around,but if I analyse it I am using three chords an e modal two note[no third] chord e b, d modal[no third] 6/9[adbe],and a d modal[no third] two note chord d a.
but the added notes in the dmodal[ or 6/9 were taken from the e dorian scale e f# g a b c#d e.here it is
http://www.youtube.com/watch?v=ojVFPeU0YQU&feature=channel_page