Sherlock Holmes was a lovely movie about Sherlock Holmes and the unspoken (well, not so unspoken) bro love between him and his second banana, Dr. Watson. Don't let the other love interests or even the mystery in the movie fool you. This was a romantic comedy of the two famous fictional Brits.
Sure, there was action. Plenty of it. But there was only one part of the movie that really caught my attention: the banter between Holmes and Watson. You could've filled up the entire movie with Robert Downey Jr. and Jude Law exchanging friendly barbs, and I would've been a happy camper.
If you wish to see this movie, see it for these two actors' performance. The rest is just dross.