Some may be annoyed by Ritchie's hyper-stylization of reality, or the pumped-up action sequences, or the focus on Holmes's manic-depressive personality (though there's little-to-no mention of Holmes's cocaine habit -- perhaps to avoid a harder rating). Others may grumble about giving Holmes and Watson a cute dog.
But the fact remains that this Holmes is woven from threads taken from the actual stories. Further, the movie benefits greatly from taking one of the most memorable supporting characters -- Irene Adler, the American con woman from "A Scandal in Bohemia," who to Holmes will always be the woman -- and building up her role, so that she is an adventuress who stands on equal footing with Holmes and Watson, albeit on the other side of the law. Holmes's Catwoman, if you will.
It's always a delight to enjoy a couple of hours of pure cinematic entertainment. SHERLOCK HOLMES shows that there's quite a bit of life in the old sleuth -- enough to fuel reinterpretations for generations to come.