This HOAX has been DEBUNKED - It's all academic now
It turns out this "crockumentary" not only relied almost exclusively upon wild speculation and logical fallacy, it also misrepresented the information supplied by the very experts it featured -- and those experts are not happy about it.
The film makers also knowingly hid facts and misrepresented things like "mason's marks" (marks of a type and purpose well known to even novice craftsmen) in order to fabricate other ridiculous suppositions and mendacious innuendo.
See for yourself and hear the experts in their own words here:
http://www.expeditionbible.com/thejesustombunmasked.html
"The Lost Tomb of Jesus" is pathetically laughable, squarely placing its makers in the same category as Michael Moore and others who specialize in sensationalist tripe. It also begs serious questions about The Discovery Channel's credulity and credibility as well as their agenda -- questions they'll likely be in no hurry to address, even as they pretend that's not really egg on their faces.