I finally bought Fanny Howe's Gone after Ron's assertion of it as an example of an emotional Language text. My thoughts: Emotional, yes. Inspiring, yes. Classic Howe, yes. Languagey, not really at all.
Also got: Renee Gladman's The Activist
Heather Fuller's Dovecote
Original printing of James Alexander's The Jack Rabbit Poem (white rabbit, 1966)