And History Channel in the US has a historical fiction based upon the declassified Project Bluebook files. Only one season so far, but I found it interesting.

Not having read the files themselves, I have no idea of the accuracy of the show to the files. But, the show has been interesting and entertaining to me. X Files reminiscent, but based on real reports.

Seems they're trying to take actual real world UFO/alien encounter reports and wrap them into a fictional conspiracy (well, theoretical conspiracy) to make for an entertaining show.

It also happens to star Aiden Gillen (Little Finger/Lord Baelish in Game of Thrones).

There ya go History Channel, finally finding a somewhat decent line between their history documentaries and Ancient Aliens.