The Dagobah clip is terrific, it really adds to the tension/spookiness of the scene.

The extra Threepio dialogue - I presume it's from the radio play? - sounds quite different, it doesn't quite sound right; but I'm sure that's partly because I know it's not from the original film. One other thing I'd add, and this sounds really pedantic, it is really pedantic, but it always bothers me when someone who's English says 'gotten'; I always hate hearing Alec Guinness say it, and I don't like Anthony Daniels saying it either.