Seeing double: The games networks play

Even before Fox’s “Joe Millionaire” launched 1,000 dating shows, successful reality TV concepts seemed to spawn clones. Consider these coming examples of concepts that recur, sometimes over and over. Copycats? Coincidences? It’s not for us to say. But as networks become ever more dependent on unscripted shows, it seems likely one good hit will yield another ... just like it.