The Complete Poems, 1927-1979 by Elizabeth Bishop

This collection of poetry gives you everything Bishop ever published and more. My main complaint about the edition itself (not the poetry) is that it doesn't provide line numbers. That quibble aside, this collection is fantastic. I particularly enjoyed "Insomnia," "One Art," "Sestina," and "In the Waiting Room" this time around. The beauty of this poetry rests as much in what it doesn't say, and in the task of digging out the pieces. I'm also interested in the way this poetry blurs the line between the surreal and the real and the way in which it portrays nature. Several of these poems definitely make my essential list.