Tom Cruise is indestructible, it seems. After escaping unscathed out of the Paramount fiasco, he now teams up with Universal to help create a sci-fi blockbuster that's ambitious and breathtaking. In any case, that's what was promised on paper. Because "Oblivion" did hold promise, yes--on a large scale. All the elements were there for serious, high-brow sci-fi entertainment: a namesake graphic novel adapted by the don dada of sci-fi geeks