"Who Do You Think You Are?" -- like "Cougar Town," "Southland" and Conan O'Brien -- found a second life on cable after broadcast.
On Friday nights, the genealogical show attracted six to seven million loyal viewers weekly to NBC -- numbers that the network would be happy with today. But, it is (and was) a network in flux. And producer Dan Bucatinsky said that it was looking at "Who Do You Think You Are?'s" cherry 8 p.m. slot for a possible comedy block.