The youtube-clip displaying indicating a snowstorm on Hoth's surface, looks great! It's one of those nice subtle changes the official Special Edition was short of because it "needed" to be obvious (Mos Eisley gags).

The original version with the blue blackground in the opening looks like there is a swimming-pool outside and Chewie is crying because Han and Luke having fun in it without him.

Just discovered (Star Wars, Episode IV):
Here's a nice overview regarding differences in the original Star Wars compared to the Special Edition and of the video versions published (unfortunately German only). "Schnittberichte" means "cut report". http://www.schnittberichte.com/schnittbericht.php?ID=4334040