God loves a terrier and probably the directorial work of Christopher Guest, too. On the latest Be Reel, we watched “Waiting for Guffman” (1996), “Best in Show” (for its 20th anniversary), “A Mighty Wind” (2003), and “For Your Consideration” (2006)—all currently on Hulu. Let’s dive in to ask what these movies tell us about today’s documentary crazes and whether there’s anything funnier than Parker Posey freaking and Fred Willard yapping.