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Larry Hagman (left) and Patrick Duffy reprise their roles as oil barons J.R. and Bobby Ewing, respectively, on TNT's relaunch of the show "Dallas." This chapter keeps up with the times by working environmental issues into the plot. (TNT via Associated Press)

Larry Hagman (left) and Patrick Duffy reprise their roles as oil barons J.R. and Bobby Ewing, respectively, on TNT's relaunch of the show "Dallas." This chapter keeps up with the times by working environmental issues into the plot. (TNT via Associated Press)

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