Been in to history and documentaries since I was a wee lad. I remember reading D-Day by Stephen Ambrose when I was like 12 and getting hooked.
Earlier this year I was on a PBS Hawaii kick thanks to Youtube. Lots of good PBS shows on the tube. Support your local PBS station with a $5 donation and they give you access to their catalog if you can swing it.
Just recently been on a Napoleon kick.
On Youtube I watch (among others):
Timeline - World History Documentaries
Real History
Fall of Civilizations
Not quite hard history, but wanted to mention two other Youtube shows that are good:
Crime Pays but Botany Doesn’t
Peter Santenello