John Simon

"....And then there is Diane Keaton's scandalous performance. Her work, if that is the word for it always consists chiefly of a dithering, blithering, neurotic coming apart at the seams — an acting style that is really a nervous breakdown in slow motion - but it has never before been allowed such latitude to deliquesce in. It is not so much an actress playing a role as a soul in torment crying out for urgent therapy — in bad taste to watch and an indecency to display. Miss Keaton is allowed to top her acting by singing two songs, which she does even less endurably: to compensate for her lack of vocal endowment, she goes in for even heavier mugging — it might as well be Central Park after dark."

--John Simon, National Review, April ?, 1977

(I recall Simon saying something about the last scene, where Annie's played by an actress whom Simon praises)