I think, like so many others, I tend to skip "The Body". Mainly because it is TOO good. I think the writing and performances in that episode are absolutely perfect. It really is a tour-de-force for the who BtVS team, not just the actors and writers, but the sound guys and the sets as well. However, it is so good at doing what it wants to do, hit you with an emotional sledgehammer, that I find it too painful to watch. I always watch it when sitting with someone going through the series for the first time, but if it is just me I skip.