The answer is on Facebook, Mr Watson
The latest advergame that plays with your Facebook profile has been launched today to promote the upcoming movie Sherlock.
Start here, “hire” a Facebook friend to help you out as Watson and start playing. I’ve just completed the registration and I’m waiting for the challenge to begin… look forward to see what will happen. Since the project has been created by AKQA, my expectations are pretty high 
I believe you mean *Dr.* Watson.
Has it been launched? I just went to the site and it says “We are readying ourselves. We suggest you follow a similar course of action and return here shortly.” Guess they’re fixing some bugs or something. Looks interesting from the screenshots here though.
Unrelated, but I just stumbled upon http://www.stuffadpeoplelike.com - what an awesome idea! Hasn’t been updated in a little bit but I had a chuckle at a few of the posts.
I signed up yesterday and everything seemed to work out fine.
@ Scott: ops yes
I’m Italian for us it was simply “Elementare, Watson” 