CNN  —  The historical echoes in “Good Night, and Good Luck” are extraordinary. Some might even say they’re eerie. On Saturday at 7pm ET, viewers around the world can see for themselves when CNN televises the blockbuster hit Broadway play starring George Clooney. The play transports viewers back to the 1950s but feels equally relevant in the 2020s with its themes of unrestrained political power, corporate timidity and journalistic integrity. Add ‘Good Night, Good Luck’ on CNN to your calendar: