This is definitely a fast paced book - it moves along quickly and the action does not stop. It's certainly not deep or thought provoking, but it's good escapist, over the top action adventure.
I thought the characterization of the main character was good - I certainly felt that I understood him and why he was taking the actions he did. The rest of the characters seemed to be there just to set up the plot, and were somewhat shortchanged.
Some of the plot line seemed over the top - but it was a fun, fast read as long as you didn't think too much about it.