Sherlock Homes is, as he so often reminds us, a "high-functioning sociopath." He doesn't feel things the way "normal" people do. And for Sherlock, that's a good thing. Emotions would mess him up, get in the way. He and Mycroft have cultivated an unemotional state, in which they don't really care about things like love or death. So it's a brave choice for Gatiss and Moffat to turn the show into what is essentially a dramatic character piece. The mysteries have increasingly been secondary to the relationship between John and Sherlock, and the wider set of relationships they have developed in a small circle of friends. This last season upset a lot of people by basically only being about those relationships, and by spending more time on them than on the thrilling mysteries. So, although Sherlock himself considers emotions and love to be "weakness," the truth is that his show isn't about the "cold hard reason" he takes as the guiding principle of his life. It's about the love the characters feel for one another. It's about emotional manipulation as much as it's about crime-solving. Basically, it's about the gooey stuff. Emotions run under the surface of every episode, and relationships are in the subtext of every single scene. Sometimes these emotions become explosive, and the entire episode stops to focus on them. What follows are the 10 gooiest, heartbreaking, most emotional, and dramatic moments in BBC's "Sherlock."