Bingo! The biggest problem that anyone has in matters like this is in accepting as 100% true all of the events - we don't experience miracles (at least not overtly apparent ones) like in Biblical days, so it is very much an act of faith to accept them.
At the same time, you can't take everything on faith (nor should you). I am of the view that G-d has given us a brain, eyes and ears for a reason - to use them to validate our faith in Him - and the use of science in this manner does exactly this.
More to the point, the chain of events is so particular and so peculiar as to be unique in history (though similar events like the gas disaster in Africa have occurred) - and not only are they unique, but they occurred at just the right time, and in just the right sequence to free the Hebrew slaves and allow them to travel to Mt. Sinai to hear G-d delivering the 10 Commandments. The science here allows one to easily counter those who say "its just a story, that stuff never happened." Of course, as I said in earlier posts, I have a bit of trouble with the exact timeline used in the documentary, as well as some of its playing fast and loose with passages from the Bible, but overall it was very refreshing to see a scientist say that the Exodus was a very real historical event.
And when you add to that the fact that God told Moses to bring the people out at that precise time, it just solidifies it for me. It would be different if God said nothing and Moses was simply being opportunistic in saying to the people, let's get while the gettin' is good.