Instructional DVD, "Grooves, Rhythms and Accompaniment Techniques for Celtic Cello
Natalie is joined by Alasdair Fraser and Darol Anger to demonstrate all the techniques, including chords, shuffle and chop patterns, bowing and pizzicato, syncopation and upper voices. I guess she couldn’t put all that in the title or it wouldn’t have fit.
This is not just for cellos; I am a 5-string fiddle player and there is lots here for me. Pretty much everything you can do when not playing melody (except actually put your fiddle down).
This is just what I have been looking for.