I'm a fan of Reacher, and I've read 3 of his books.
Man I was pleasantly surprised by this movie. Combo of Dirty Harry, Bullitt, Chinatown and Man With No Name. Very laid-back and straight to the point. It has the attitude and mood required for a Jack Reacher movie. The fight scenes, car chase, and shoot-out are some of the best in years.
Tom gives his all as Jack, more grim and violent, but after watching the movie, I felt that other actors could have been a better Reacher. Jack's size is just too much of a big deal for me to accept Tom as Jack. Chris Hemsworth and Hugh Jackman would have been more acceptable if they really want someone handsome (although Reacher in the books ain't what you would call handsome), but Tom is just too small to play Reacher.
The movie would also have been much better if it was rated R instead of PG 13. Jack is more in the realm of the mature bad-ass heroes ala Dirty Harry Punisher Mad Max RoboCop John McClane John Rambo than the for-all-ages heroes like Bond Indiana Jones or Bourne.
7/10
Would have been 7.5/10 if they have gotten a better actor to play Reacher, and would have been 8/10 if it was rated R.