Variety has published a report on both the all star casting for the 'Dallas' adaptation and Casino Royale, the 21st James Bond installment.New Regency's big screen version of 'Dallas' isn't officially expected to announce casting until Sacha Gervasi turns in the rewrite, but many big name actors have already shown interest in doing the project. Speculation now has John Travolta in the lead role of JR Ewing, but sources close to the film say that this isn't certain. Mel Gibson has not completely ruled out the job, Kevin Costner has shown reluctance until he sees the rewrite and Tommy Lee...