The Ticker: Couric, Hume, Cosby…

> New CBSer Katie Couric “has just been signed to narrate an upcoming American Masters segment” on old CBSer Walter Cronkite, B&C reports…

> E&P: Superman is “a pretend journalist,” Stephen Colbert said last night, as a title card on the screen next to Colbert added: “like Brit Hume…”

> BCBeat says Wednesday’s NBC Nightly News story about YouTube “appeared to be a promotion for it masquerading as a news story,” since NBC just struck a cross-promotion agreement with the site…

> Meet Rita Cosby‘s boyfriend…

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