**read only if you know how it ends**
I actually really enjoyed the film. I heard all the mixed reviews and was expecting the worst - had expected Tom's hair to be completely disgusting, which it wasn't, thankfully. I WAS hoping for more of a hottie to play Langdon as I liked the undercurrent -but not focus- of their romance in the book. I agree that they left out some plot explanations that would have made Hank's final "ah-ha" reveal to Sophie more believable. I was dissapointed in that final speech as I didn't think the build up to Langdon's knowledge was adequate for him to draw that confident conclusion.
Unbelievable was the one on one Sophie has with the monk in the plane. I thought for sure Paul Bettany (which I really enjoyed in many scenes, though prefer him in sexier with less make-up roles) was going to try and bite her nose off. I thought this scene somewhat odd as no one in the plane tried to pull her away, or at least came to her side in case the monk worked himself loose.
I'd label this one a rental.. The movie did have a nice pace to it, albeit the characters did somewhat seem like they were on holiday. Definitly read the book as is suggested above, don't take it seriously, and enjoy mulling over the theory!