'Mad Men': The Most Jaw-Dropping Moments of Season 5
Betty Francis (January Jones)
To be clear, the fact that Betty put on weight wasn't what shocked us -- it was how even more selfish and naïve the fat suit seemed to make her. She was disappointed to learn that she didn't have thyroid cancer and was instead "just fat." And then there was her outlandish Thanksgiving speech that consisted of "I'm thankful that I have everything I want and that no one has anything better" to remind us of how deeply unhappy and obviously out-of-control she is.