Here are some poetry sites you can use to put a poetry unit together.
Poetry Everywhere
http://www.teachersdomain.org/special/pe08-ex/
http://www.pbs.org/wgbh/poetryeverywhere/
For the Love of Poetry
http://depts.washington.edu/ctltstaf/example_portfolios/williams/pages/88254.html
Thematic Unit
http://doe.sd.gov/octa/ddn4learning/themeunits/Poems/lessons.htm
The Poetry Page
http://home.cogeco.ca/~rayser3/poetry.htm
27 Lessons on Poetry
http://volweb.utk.edu/school/bedford/harrisms/spotlight.htm
poets.org
http://www.poets.org/page.php/prmID/6
World of Poets
http://www.worldofpoets.org/navteachideas.html
Psychedelic Poetry
http://www.englishjournal.colostate.edu/PsychedelicPoetry.pdf
The Poetry Place
http://www.mcsdk12.org/curr/poetry_place.htm
Poetry Foundation
http://www.poetryfoundation.org/
The Lanyard by Billy Collins
http://www.teachersdomain.org/resource/pe08.rla.genre.poetry.collinyard/
The Lanyard lesson plan
http://www.teachersdomain.org/resource/pe08.rla.genre.poetry.lpcollins/
Poetry Writing
http://www.theteacherscorner.net/lesson-plans/writing/poetry/index.htm
Poetry Lesson Plans
http://www.teach-nology.com/teachers/lesson_plans/language_arts/poetry/
Favorite Poem Project
http://www.favoritepoem.org/lessonPlans.html