I thought the Emperor was pretty creepy, and it's still a great performance. He can be lazy like an old man cos he yields such great power, and his sardonic tone is fantastic IMO.
Off course. It is a great performance, but that's not the point. The point is, the emperor doesn't put any effort into turning Luke to the dark side, it's like he doesn't really care. I'm sure creepiness and sardonicism alone can't reverse somebody, if anything it should make you stay the fuck away from that path! Luke seems like a pretty normal, farmboy sorta guy, apart from having a lil bro on sis action, don't think creepiness and sardonicism are his game.