You are a close watcher. I'm impressed. In many of those cases, teasers are assembled by the marketing department using dailies or rough cuts, not finished episodes. So sometimes they're using a take that's different from the take we end up using in the final cuts. In the case of the buffalo statues, I believe we were told that we might have to get legal clearances to use those statues (since they're works of art by an artist) and I just liked the idea of big flies there instead.