‘The Amazing Race host Phil Keoghan meets up with ET’s Nischelle Turner in Vancouver, Canada, where he’s kicking off filming for season 39 of the hit competition series ahead of season 38’s premiere, Sept. 25 on CBS. This season’s competitors all come from the world of sister series ‘Big Brother,’ so an all-celebrity season could be next! Phil dreams up some A-list stars who might be down to play.