The following was the result of a ten minute class exercise to write a poem with a nod towards the Terza Rima style. I've done a couple of minor edits since so that it reads better.
Iambic pentameter. Isn't it great?
Its hurdles: they curdle my creative flow;
Tetrameter's better - the rhythm of eight.
I like playing with words to see where rhymes go;
Don't like their arrangement to sound like a sham.
It helps if I write on a subject I know.
And so, when I'm writing, I don't give a damn.
This counting of syllables gets in the way.
I write what I write: iamb, what iamb?