: Sterling Cooper Draper Pryce merged with competing ad agency CGC, where Peggy Olson (Elisabeth Moss) had gone to work for Ted Chaough (Kevin Rahm), a rival of her boss and mentor, Don Draper (Jon Hamm).
Why this worked
: The merger brought Peggy back into the daily setting, and added a new layer of complexity to her relationship with Don. It also introduced a new character, Jim Cutler (Harry Hamlin), allowing for viewers to dig deeper into the relationship between Peggy and Ted, and created plenty of opportunities for "Mad Men" creator and writer Matthew Weiner to break out of what was becoming a stale environment -- literally, the staff broke through the office ceiling to expand -- and take the ad agency-based story lines in multiple new directions.
-- Molly Chance, Zap2it