Nikki Finke is reporting that last Saturday night, at a swanky dinner party thrown by movie producer Leonard Goldberg in honor of Viacom honcho Sumner Redstone, that Redstone passed along a Dreamgirls post-mortem that had originated with Paramount Pictures chief Brad Grey. Redstone told the gathering that Brad explained that the reason Dreamgirls wasn’t nominated for a [Best Picture] Oscar was because “everyone hates David.” As in Geffen, the producer of Dreamgirls.”