As much as I loved the movie starring Minnie Driver and Chris O'Donnell, I loved this book far more. The movie skimmed the lives of everyone except Jack and Bernadette, nicknamed Benny.
But the book shows exactly how large the circle of friends actually is. It delves more deeply into the lives of Eve, raised by nuns who love her as a daughter, and Nan, the beautiful friend from a wretched family. Eve is also a shunned relative of the rich family with whom Nan is attempting to affiliate herself.
Benny's relationships with her parents are also more thoroughly examined, as is her growth from child to woman in the face of her father's death, going to college and meeting her first love -- and getting her heart broken.
Also - Jack (O'Donnell in the movie) is not the golden good guy that Hollywood paints him out to be. He willingly and knowingly cheats on Benny with Nan, which is far more realistic than the film version where he is liquored up by Nan who then uses him.
Again, Binchy's lilting writing style brings the little Irish vilage of Knockglen and the bustling city of Dublin to life, and she succeeds in keeping her myriad characters (more than in the movie!) on track, believable and interesting.
I think every woman in the world can identify with Benny when she meets Jack --- can't quite believe such a great guy would look at her, much less make her his girlfriend. And you will feel for her and root for her.