I have read some of her stuff including "My Sister's Keeper" which was very good.
I haven't read "Nineteen Minutes" but I read Lionel Shriver's "We Need to Talk about Kevin" which is the same subject matter and that was an excellent if somewhat disturbing book.
nineteen minutes was actually my least favourite of all of the Jodi Picoult books I've read. I loved My Sister's Keeper, Plain Truth, Salen Falls, Perfect Match and Vanishing Acts though. She is such a good character writer and really makes you feel the story.