When my mother was growing up her grandfather owned a movie theatre and going to the movies became a big family ritual and it's something she's passed down on to us.
Which is to say that I HAVE SEEN SHERLOCK HOLMES AND IT IS AWESOME.
It's a marvelous movie in its own right, even if you're not familiar with the series, and perfectly faithful to the series if you are.
Also, I am really looking forward to seeing what the revitalised fandom is going to put out.