Yeah, right. And he's going to prove it with DNA. Of course, that means he would have to have an authentic sample of Jesus' DNA, or at least that of a close relative. Chicken and egg problem, but it sounds convincing to the gullible.
And it still falls down from the simple fact that, if the body were available, the authorities could have produced it to stop the new, disruptive religious movement that claimed Jesus had risen. And, those who had buried the body would scarcely have gone to gruesome deaths to support the claim.
Ten years from now, Jesus' disciples will still be proclaiming his resurrection, and James Cameron's claim will be a footnote.