Just finished reading this last night (well 2am today).
I thought much of the book was brilliantly written, from about half way on it really started to grip me.
There were definately a few surprises (Henry being there when Ingrid commited suicide, and the incident when Ingrid had obviously worked out that the little girl looking for her father was Henry's daughter, allough she never really told him).
I did shed some tears. Henry meeting his daughter for the first time was really touching, as was the great lengths Claire went to for Henry's birthday, including the moment when she played the recording of his mother singing.
At the start of the book, as has been said, the almost detective like discriptions were a bit unusual, nobody recalls that much detail.
As the book was reaching its end I got really concerned about how she would write the ending. I knew Henry was going to die and I knew that there was an earlier scene (the shooting) to be tied in, but surely it wouldn't be that simple. I like an ending that I didn't see coming.
The way Henry died, just vanished, disturbed me, and I was left quite depressed by the end, even the slightly uplifting meeting years later didn't change my mood. For this reason I won't be reading it again in a hurry, but I would definately recommend it and will be lending it out to friends, then probably send it bookcrossing.
I look forward to the movie.