A great movie all the way around. Robert Downey jr. is without question one of the best actors alive today, so generally speaking if you see a movie with him in it, the acting is going to be at a higher level than most. It seems that not only does he do well in the pictures he is in, but those around him seem to be better than they normally are.
That being said, the movie itself is pretty entertaining, as well. Slightly on the long side (for those of us who now have the attention span of an OIF zombie-movie-watching veteran) but mostly fast-paced throughout. I was especially fond of the complete lack of blue-faced aliens who are at one with their environment. Their absence gave room for a gritty and humerous look at Sir Arthur Conan Doyle's most famous character come to life on the big screen.
I was also impressed at the relatively small use of CGI in the film and how few transforming robots there were. That's quite rare these days, I've come to find. Apparently the budget didn't allow for that, but I think the movie benefitted in the end.
And speaking of things absent from the movie that made it infinitely better, there were no rappers-turned-actors, schlocky political messages, or even a hint of "corporations" being the end-all be-all of evil. That's downright amazing, given the last half-dozen movies I've seen.
Oh and neither Hugh Grant nor any member of Sex and The City made a single appearance. High marks received on that note.
Worth your time on DVD for sure, and possibly a trip to the theater, as well.