Well I enjoyed it. Sure the book isn't the greatest literary work, but it is a fun read. As for the film, not the greatest, but I certainly don't regret going. Audrey Tautou was good, and despite initially not being able to see Tom Hanks as Langdon, he actually worked out well.
I liked the fact that about a quarter of films dialogue was French. When French characters spoke to each other they spoke in French. Not your usual Hollywood film where they speak English but with a French accent.
Yes it was long, but it certainly wasn't boring and I didn't look at my watch once. Hubby felt that if you hadn't read the book you may have been a bit lost.
Perhaps it helps that the subject matter is right up my street, but I would recommend it.