What is your favorite episode of Law and Order: SVU and why?

I have three: "Fault" in season 7, because it was really a turning point in Benson and Stabler's partnership; a little boy dies because they put each other first, so they have to start asking a lot of hard questions about their relationship. "Ghost" in season 6, because Alex Cabot comes back (however briefly) and we get to see both her and Casey Novak rather than just one or the other or stunt casting. "Perverted" in season 11 because Liv has to fight for herself for once instead of for someone else.