Sherlock, Series 2

John Watson:
You... you told me once... that you weren't a hero. Umm... There were times I didn't even think you were human, but let me tell you this. You were the best man, the most human... human being that I've ever known and no one will ever convince me that you told me a lie, so... there. I was so alone... and I owe you so much. But please, there's just one more thing, one more miracle, Sherlock, for me, don't be...dead. Would you do that just for me? Just stop it. Stop this... [He walks away. Sherlock watches him go, then leaves.]