I thought it was okay. I loved the first forty-five minutes, and was then terribly bored for half an hour while they faffed around making Sherlock look like an idiot, and did the Princess Bride scene. (Also, and here it reminded me of Luther, whatever happened to show not tell when it comes to your lead character's mental state? There's no need to have the cast expositing all over the place. Trust the audience a little!)

Still, I very much look forwards to future episodes not written by Stephen Moffat.