Very cool stuff. The print shows some wear, but come on, the movie's over 40 years old. No compression errors can be found, and the overall look of the transfer is very clean and clear. I was very suprised at how clear this disc sounded, I expected problems with this part of the disc, but none were there. Although the movie is very old, and not made with the intent of using many audio channels, the soundtrack sounds great, and some scenes make good use of your system.
Dialogue is always audible, and the effects sound very good as well.
Just for laughs, turn on the Spanish audio track, it's worth a listen. Now this is what I like to see on DVDs. The main feature is a one hour documentary on Ray Harryhausen, and is one of the best I have seen on DVD to date. It follows his work from his youth all the way to Clash of the Titans. It implements interviews, model close-ups, and concept drawings, a true masterpiece for Harryhausen fans.