Two recent winners for me.
Blue Eye Samurai - Netflix.
If you are into all things Samurai and depictions of 17th century feudal Japan, this animated series will be right up your alley. Mulan is for kids. This is definitely NOT. Gritty and sometimes grim - with a generous helping of Tarantino-esque violence. Fight sequences are epic, if somewhat unrealistic at times.
Lawmen: Bass Reeves
The long-neglected (for obvious reasons) story of one of THE most badass lawmen of the wild west, believed by some to be the actual inspiration for the fictional (and campy) character of The Lone Ranger. Truth definitely trumps fiction here. Well cast, high production values.
NB - I am two episodes into each series. Sometimes a series can start out well and nosedive. Here's hoping that doesn't happen with these.