This is probably her most famous poem, Valentine:
Not a red rose or a satin heart.
I give you an onion.
It is a moon wrapped in brown paper.
It promises light
like the careful undressing of love.
Here.
It will blind you with tears
like a lover.
It will make your reflection
a wobbling photo of grief.
I am trying to be truthful.
Not a cute card or kissogram.
I give you an onion.
Its fierce kiss will stay on your lips,
possessive and faithful
as we are,
for as long as we are.
Take it.
Its platinum loops shrink to a wedding ring,
if you like.
Lethal.
Its scent will cling to your fingers,
cling to your knife.
And here's Education For Leisure, which was banned from the school syllabus for being too violent, in a spectactular example of missing the point.
The Huff Post has an article about her appointment, and she did an interesting interview with Jeanette Winterson a couple of years ago.
Also, the Book People are doing three of her books for a fiver just now...