A change I really did like since the Special Edition was the ending of RotJ. WAY better soundtrack, and it's nice to see the other various locations.
As for the "Noo!" thing in RotJ, here's a clip:
Sorry, don't know how to play this video :(
http://www.youtube.com/watch?v=27RVJJfny4I
I didn't like the delivery of his "No!" in RotS, and it comes back in the second use in RotJ. I actually don't mind the first use of it in RotJ, as it seems more like what would have been fitting as I see it (i.e. less "NOOOOOOO!" and more "No...") -- a defeated despair for RotS and a regained, simple confidence in RotJ. At least it's understandable from a storytelling standpoint, even if I don't like the delivery.
The song and dance number in RotJ was pretty bleh, though I much prefer that they replaced Sebastian Shaw with Hayden Christiansen as I found Shaw to stand out like a sore thumb, though I do wish Hayden looked less menacing.
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