I've loved this film since I was a kid, and the crowning glory is Harryhausen's stop-motion animation.
As a family adventure film, I'm convinced there is nothing finer. People of all ages can enjoy this film, and if they don't, they're either utterly cynical about everything and anything, or there is something wrong with them.
The title of this review naturally refers to the skeleton fight scene. If this film comes on and I'm busy, I will drop everything to watch this scene, even if I haven't had the time to see the rest of the movie. The moment the skeletons come out of the ground is unforgettable, and the animation is blended beautifully with the live action to create a scene that is as near to cinematic heaven as you can get. I've seen it re-done twice, once in Hercules (the dodgy TV series), and again in the Jason and the Argonauts mini-series. Both times CGI effects were used, and both times, despite the animators' best efforts, neither came close to the original masterpiece.
This whole film, and the skeleton scene in particular, highlights the fact that despite some of the wonders being done with CGI (and I'm not anti-CGI in the least), sometimes there's just no substitute for proper stop motion animation. (Just ask Wallace and Gromit!)
It's cheap- buy it and enjoy it!