Favorite Sith, I'd have to say Count Dooku for me. Simply because he was a guy who respected the duelist nature of being a swordsman. He saw those using multiple lightsabers as those who were ust compensating for a lack of skill which was pretty awesome. Also its frickin Christopher Lee who played him. RIP.
Favorite Jedi: Luke Skywalker, I haven't read to much into his role as a jedi after the battle of Endor, but I like his story.