I'm still curious what the purists think about the 1980 special edition,
when "Star Wars" became "A New Hope":

1) Alarms and klaxons are different.

2) Added panel sound effects aboard the Falcon, including a descending
whine as they come out of hyperspace.

3) The communications to Tarkin via comlink are completely different.

4) When Threepio and Artoo are hiding from the Imperials on Tatooine,
the stormtrooper's dubbed voice is different, and so is the line:

Laserdisc:
"All right, check this side of the street. The door's locked. Move on
to the next one."

Pre-ANH video:
"All right, check that side of the street. It's secure. Move on to the
next one."

5) A different actress dubs for Aunt Beru. Neither version features
the real voice of actress Shelagh Fraser, who has a thick British
accent.

6) Some Threepio dialogue uses different takes. The additional lines
("The tractor beam is coupled to the main reactor in seven locations.
A power loss at one of the terminals will allow the ship to
leave....") are missing from the laserdisc version.

7) The echo in the core shaft ("I think we took a wrong turn...") is
present in both versions. However, the echo is more pronounced in the
laserdisc version--probably because the video is missing the surround
channels.

8) The laserdisc is missing the now-famous "Close the blast doors!"
line.

9) Intership voices during the final battle are not synthesized.

10) During the final battle, "countdown" voices on the Death Star and
at the Massassi base on Yavin IV are completely different.

11) Luke's line on the laserdisc, "Blast it, Biggs. Where are you?" is
different on the pre-ANH video: "Blast it, Wedge. Where are you?"

Oddly enough, there is ONE visual difference. As the stormtroopers
are distracted by the duel between Vader and Kenobi, Threepio turns
and says, "Come on, Artoo. We're going." CUT to Han who says, "Now's
our chance, go!" In the version with the mono mix, these two shots are
reversed!