PokerListings.com recently ran a series of articles on the history of the poker boom. Part one details the hole-card-cam fueled birth of the poker boom. Part three also has some relevance to TV: it's about the major televised tournament series. For more on the history of televised poker I recommend The First Modern Poker TV Show. Two interviews with producer Mori Eskandani (PokerNews, Ante Up!) also go into the history of televised poker.