Rob Payne at Pajiba:
Oh, sure, there’s always Don acting like the Guy-in-the-Rated-R-Movie and Roger Sterling’s one-liners or pathetic attempts at intimacy with the wrong woman. Who can’t get enough of Pete Campbell’s tantrums and meltdowns or Peggy winning at life while everyone else around her flails miserably? Every scene with Joan is sure to be satisfying, on talent and aesthetics levels, and any sequence involving Betty and her new-ish family is rife with schadenfreude delights. And, at the end of a long week when you feel the desperate urge to punch someone, anyone, in the ear - there’s always Harry, just waiting for a chance to say or do the most cringe-worthy thing imaginable. But the character that makes me smile and damn glad I tuned in every single episode, even if (at most times) he only merits a scene or two, and often nary a line, is Aaron Staton as “Ken Cosgrove, Accounts.”
Ken is probably the only character on Mad Men that I didn’t hate at some point in the series.