Fall 2012's least-watched shows by network: Zap2it's Year in Review

(CBS)
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'How I Met Your Mother' (CBS)

Viewers: 9.55 million
Rank: 37th in viewers, t-15th in 18-49 (3.9)
Fun fact: "HIMYM" was just picked up for a ninth season, thanks largely to its very solid ratings this late in its life. It's on this list only because of the relative strength of the rest of CBS' lineup.