Shugh, I would reccomend (if you already havn't seen it) getting ahold of Carl Sagan's "Cosmos" series. Pay particular attention to Episode IV (or thereabouts, it might be III or V, but I think it's IV) where he discusses Velikovsky. Cosmos would be an informative thing to watch, even just as a quick educator on some matters to give you slightly more insight, but also, Sagan says some very intelligent, well thought out comments on the matter in that episode, that (as a film buff) I think would make an excellent contribution to your film. As carl sagan says (paraphrasing):


"The problem with the entire affair, wasn't that his ideas were strange, or unfounded. But that a number of people in the scientific community tried to silence him. The silencing and censorship of uncomfortable or differing ideas may be the norm in politics and religion, but it has no place in science."

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"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts."
--Bertrand Russell