The Never-Ending Poem by the Poets of Everything by Mary Strong Jackson (2014), mostly because I am married to Mary's son. Don't let that familial relationship distract you, though, I would like this book-length poem even if the author wasn't my mother-in-law.
This volume of poetry consists of a series of inter-related poems that each flow into each other by picking up a word or phrase from their predecessor and then giving a focus to their successor. The author invites the reader to continue the poem after the book ends, even providing some blank pages to aid in keeping the never-ending poem going.
There are a lot of gems in here, but one of my favorite poem/verses is:
The poet of oceans
meets with the poet of prairies
to talk about expanse
food given to nourish
storms that toss one's home about
the poet of prairies says
"It is the same for me"
I've read quite a few of Mary's poems and I always admire the straightforwardness of the observations and the combination of the prosaic everyday world with a somewhat philosophical eye. Some of the poems are funny, some are heartbreaking, and all feel more than anything else, extremely real. This is a good read, and one that can be dipped into at any point and returned to again and again.
You can read more of Mary's poetry and other writing on her website: http://strongjacksonpoet.wordpress.com/