Feudal Japan gave us the Shinobi. George Lucas gave us the Jedi (he also gave us Ja Ja Binks, but I am conveniently ignoring that).
Both are respected warrior groups versed in the art of war. Both favor sword-like weapons: Jedi use Light Sabers, Shinobi use Katanas; and both favor covert operations to full-scale conflicts.
So what do you get if you cross a Jedi with a Ninja? A futuristic-feudalistic covert semi-telekinetic mercenary armed with ninja stars and a lightsaber tasked with keeping peace in the Empire by means of unorthodox acts of war – espionage, sabotage, infiltration, assassination and trade negotiations. Cool, huh?
Obi-Wan Kenobi gets the Ninja treatment in this mash-up.