TV's Worst Significant Others: 'Mad Men's' Don, 'HIMYM's' Robin and more

(CBS)
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Robin Scherbatsky, 'How I Met Your Mother'

Played by: Cobie Smulders

Why we'd dump her: This should in no way imply that we don't love her, but Robin is the last person we'd want to be our wife or girlfriend. She's fickle, selfish and about as warm as the Northwest Territories. The upside? She knows all those Canadian sex acts.