I actually don't mind the Ancient Aliens shows. It's at least entertaining in a cheesy way.
The reality shows are driving me insane, though. Pawn Stars is good, since it's a pretty good combination of entertainment and learning about the
history of the pieces that come in, but everything else is awful. And the worst part is they run the shows into the ground. You can watch about 4 hours of American Pickers in the afternoon. Even Pawn Stars is getting on my nerves because of how much they show reruns.
If you have Xfinity there is section of the history channel on on demand called clash of the gods, it very good piece of history to watch.
That series actually really annoyed me. I can't remember specifics, but there were quite a few inaccuracies in that show and the endings really annoyed me(I'll restrain myself due to forum rules, but suffice it to say I felt they were often too biased towards the modern day viewpoint). Also, I hated that the show claimed that the possible literal origins of the myths were "the connection to reality." Anyone versed in mythology and folklore could tell you there are TONS of ways that myth reflect reality aside from what may have inspired it. They can tell us SO much about the reality of the culture's beliefs, world-view, culture, and storytelling methods. All of which I personally find extremely fascinating, and which the show seemed to play down.
Though, to be fair, I'm extremely picky when shows cover the subjects of mythology and folklore.