One performance that had Sundance buzzing Saturday wasn’t by an actor. After reports that Nicholas Jarecki cast Vanity Fair editor Graydon Carter in his directorial debut, “Arbitrage,” the audience at the premiere was surprised to see the role was substantial. “He has two scenes that are really good, playing the head of a bank,” said producer Laura Bickford. “It’s more than stunt casting.” The hotly tipped Richard Gere movie is for sale. Gere was low-key at the “Arbitrage” after-party. Dressed in jeans, a gray T-shirt and sweater, he and wife Carey Lowell were two of the first to arrive at suave Main Street hot spot Grey Goose Blue Door, where they chatted with Jarecki in a VIP area. Guests included Laetitia Casta, Brit Marling, Saudi producer and Hollywood newcomer Mohammed Al Turki and “Born Rich” director Jamie Johnson.

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