Anyway, my Top 5 favorite short poems:
-"She Walks In Beauty" by Lord Byron
It's just such a perfect and potent poem...I really don't even know how else to describe it without going on and on about it, but just those opening lines alone...
-"Sonnet 30" by William Shakespeare
Yeah, you knew he'd be on the list...though if you've never read this one, check it out, it's my favorite of his sonnets, at this stage, anyway, I really like the topic and how he approaches it and resolves the matter in the end, I try and remember it when I feel down about someone...
"The Raven" by Edgar Allen Poe
Enough said, moving on...
"Rhapsody on a Windy Night" by T.S. Eliot
TWL and Prufrock are too long, and they're the two big works of Eliot's I love, but his shorter works are great, too, and this one's a great poem on memory and lives lived and all that...and the only redeemable thing that came out of "Cats"--not a fan of that musical, half for it being too pretentious for even me, and half for it mucking about with Eliot's poetry in an over-stylized and theatrical way--is that the song "Memory," which in fairness is a decent song by itself, brings some of the best lines in this poem to life.
"Ode on a Grecian Urn" by John Keats
I have a friend who's in love with Keats...and this poem, and it is a masterpiece, and the end line probably one of the most poignant and puzzling in all poetry, Eliot himself said it either ruined the poem to some extent or else he just couldn't get ...
"Beauty is truth, truth beauty..."