A difficult question I know ... mine changes each time I listen to more than half the album in one go. One steady favourite though is 'Go Long' which is utterly riveting in every way; from the vocal melody, to the harp arrangements to the overall musical arrangements - they're all spellbinding. Alas, it's quite sad that it would appear she hasn't played this song live. I'm desperately hoping she plays 'Soft as Chalk' or 'In California' when I see her (my other two favourites).
What about everyone else?