Joyce Kilmer's "Trees" is an example of an emjambment.
I think that I shall never see
A poem as lovely as a tree.
A tree whose hungry mouth is prest
Against the earth's sweet flowing breast;
A tree that looks at God all day
And lifts her leafy arms to pray.
A tree that may in summer wear
A nest of robin's in her hair.
Upon whose bosom snow has lain
Who intimately lives with rain.
Poems are made by fools like me
But only God can make a tree.
William Shakespeare used the form in his plays including Romeo and Juliet. (http://thewritepractice.com/enjambment/) John Keats' Endymion (http://en.wikipedia.org/wiki/Endymion_%28poem%29) follows the enjambment pattern as does William Wordsworth's It is a Beauteous Evening (http://www.poetryfoundation.org/poem/174793).