Broadway theaters will dim their marquee lights on Friday night in memory of Gore Vidal and the cast of his play “The Best Man” will dedicate the next week of performances to the late author and playwright. The Broadway League said Wednesday that lights will be dimmed for one minute at exactly 8 p.m. Friday. Executive Director Charlotte St. Martin called Vidal’s work both “timely and timeless.” Vidal died Tuesday in Los Angeles at age 86. The second revival of his political play “The Best Man” opened in April with strong reviews and a stellar cast that included James Earl Jones, Angela Lansbury, John Larroquette, Candice Bergen, Eric McCormack, Michael McKean and Kerry Butler. The show currently stars Cybill Shepherd, John Stamos, Kristin Davis, Mark Blum and Elizabeth Ashley, in addition to Larroquette and Jones. … Beyonce is teaming with the United Nations and humanitarian aid organizations on a global campaign to encourage people around the world to get involved. The pop star and songwriter Diane Warren will donate a video of “I Was Here” that will be filmed in the UN General Assembly Hall in New York in front of a live audience. The video will premiere Aug. 19 on World Humanitarian Day and the UN hopes it will help the campaign reach 1 billion people. … Carrie Underwood and Brad Paisley are hosting the Country Music Association Awards for a fifth time. Underwood started the online buzz about their return with a tweet Wednesday, saying she was hanging out with Paisley. She joked that she caught him in her makeup chair and added the hash tag #suchadiva. CMA confirmed the news on Twitter and Facebook shortly after with a picture of the two stars during a photo shoot. The CMA Awards will air live Thursday, Nov. 1, on ABC from Nashville.