ok then...
a few points here:
1) This style is clearly derived from the Extra Credit style of Escapist Magazine. You don't seem to be trying to gain anything from it (i.e. money, grade for a school project, etc) so really it's a case of no harm no foul, but even so... its kinda lame of you.
2) I'm familiar with the discovery channel special (though admittedly not intimately familiar) and honestly it isn't the most reputable piece of work I've ever seen. As with many things presented on Discovery, the aim of the network is to draw an audience and not necessarily to inform. Sometimes a story found 100% in fact and empirical data doesn't make for the best television. Stories, testimonies, evidence and presentation are often edited, skewed, and otherwise tweaked to make stories with more suspense and to create more interest.
It's not that there isn't some fact contained in the program; it's just that it should be taken with a grain of salt.
3) I have seen similar programs claiming the intervention of extra terrestrials in primitive human societies and many seem plausible at face value. Problem is most turn out to be over sensationalize tabloid tripe that falls apart with only a bit of research.
4) I believe in aliens. The universe is so vast that the chance of life having NOT formed elsewhere borders on impossible. But that same vastness that makes alien life so likely also makes the odds of us ever encountering it (at least any time soon) equally as unlikely.
Sorry for typos