Just watched this movie last night. And I'm still captivated with Robert Downey Jr. For me, the second series of Sherlock Holmes has no big difference from the previous movie. Holmes' way of thinking gives him charming impression, beside his strange behavior as you know he does every thing on his own track (I think it's more caused by his genius). 
The clear complexion in series, Dr. Watson holds role that is more important to go to the next scene. And honestly I didn't expect it before. Finally the only impression that I get after watching the movie is.. I'm looking for Holmes and Watson next adventures!