Eat, Pray, Love and I liked Committed. I hadn't read any of Gilbert's fiction until this one. I really liked it and was pretty consumed by it for a week or so.
It is a sprawling novel following the Whittaker family, particularly Alma Whittaker. The story goes from London to Peru to Philadelphia to Tahiti to Amsterdam and is full of wonderfully researched detail about plants, great character development, plot twists, and humanity..