Whenever someone says "We've reinvented whatever", I cringe. Especially if originally it was a good thing. But I had heard they'd put some comedy to make it a less grave character, and it is a Jude Law movie after all - not like I was going to resist not seeing it.
So as to be prepared of some sort, I had rewatched that Chris Columbus young Sherlock Holmes movie (the cute one that looks like a 1999 Harry Potter movie). In that movie, they end up in a cript or whatever that was, trying to prevent the damsel's sacrifice, and pretty much all the killings were in the form of a drug that made people hallucinate and thus kill themselves. Everything was very dark, the streets were smokey, the whole deal.
Guess what the new Sherlock Holmes had in mind first scene? Beat up the guard and rescue the damsel. Assisted by dear Mr Watson, of course. Where were they? Some sort of cult hq in which a dark hooded creature was hypnotising the damsel as if to make her put a dagger across her chest. Ring any bells?
It's a magic versus science mystery, but nonetheless entertaining, especially when you put in to account the delightful performance of... something something Jr, the fella who played SH. Plus, you've got Rachel McAdams, playing The powerful woman, and quite amusing damsel as well. There is comedy, excentric behavior, an unmistakable House-ish mood, a great deal of fighting and destroying, ... - overall, a very entertaining picture, though not quite Sherlock-ish.
Maybe I ought to see one of the real ones some time.
(The "Christmas Day" thing doesn't remind you of The Holiday, just a bit? Freaky poster for such a non-dark movie.)