This show is genius.. probably not why / how you think though
Let me preface this by saying I watch this show as entertainment and laugh at most of the "evidence" they present...
What makes this show amazing to me is the production itself. The History Channel has found a way to make an entertaining TV show, that's almost 90% B roll footage (IE free footage collected over time). This show may be one the the cheapest cost productions on TV.. and yet it's still good. As I said.. genius.