What bothered me a lot in later times it that shit they did to the end of episode 6. You know, well SPOILER AHEAD I suppose, but I'm guessing pretty much everybody know this by now. Anyway, you know that last scene were ghost-Yoda, Obi-Wan and Anakin pop in to smile at Luke? I love that part, but for some reason they decided to take away the bloke playing old Anakin and pop in Hayden, which makes no sense at all! Also it's annoying!
At first when I saw it I found myself thinking: "Well that's kind of neat!" but the more I thought about it the more I started to dislike it.
Firstly: Why would his "force-ghost" go back 20 years in time? After you redeemed yourself, what the thing with jumping back in time to the time when you started on the road you redeemed yourself from?
Secondly: It's just confusing! When you saw the old bloke you could kind of see it was the face of Vader after the mask goes off. Which makes sense to Luke and to people who is watching for the first time (I would show the old trilogy before the new one to people who haven't seen it before). Now instead some kid pops up, fair enough one can say that Luke "knows", but everybody else are just asking "Who the fuck is that?"
Thirdly: Just why?