TV stars Borat Sagdiyev and Sacha Baron Cohen. Planet Gossip‘s Marc Malkin says Oscar-nominated (for adapted screenplay) Cohen has turned down an invitation to be a presenter at the Academy Awards ceremony, because he feels uncomfortable in public when he’s not Borat (which sounds to us like a mental problem). But two other insufferable exhibitionists, Jack Black and Will Ferrell have agreed, not surprisingly, to perform “an original – and very funny – tune” for arguably the world’s largest audience.