Welllll... you don't necessarily have to go completely cold turkey. Last year the TdF web page had live, online, blow-by-blow updates. It got pretty intense at times, like Hautacam when Armstrong blew past Pantani's attack and showed the world that he was back (“Oh yeah, the legs were okay today..."). The only drawback is toward the end of the stages, when everybody is constantly refreshing their pages... response slows to a crawl.

http://www.letour.fr/