Nothing beats the new Burning Steppes 3rd quest chain imo, where you thwart a plot to control a Pit Lord by disguising yourself with a mask, trick the leaders into accepting meat with laxatives, a 'controlling crystal' that has zero magic and a load of sleeping flame imps... Then if that didn't scupper them enough, fly a red dragon over their mountain caves and blast whatever the Pit Lord didn't send flying.