Don't watch Light Years - Watch Gandahar
Here is a movie I've loved since I was like... 2 years old or something when I first saw it. I had a VHS recording of the french version. A great, entertaining, touching and very imaginative movie. So I was just surfing about and searched for Gandahar on youtube and the english dubbed version came up, so I skipped through bits and pieces. The voices are weak, the soundtrack is changed here and there to some stupid synth music, the sound effects differ for the worse. For example in a scene where metal men are climbing out of the sea and start to walk you hear footsteps on rock and nothing else. In the french version you heard a buzzing robotic sound as well as their heavy breaths and their powerfull footsteps.
Also apparently Sylvain is the son of the winghead woman in the english version which he is not in the french version. The beginning titles looks like the intro to some old 80's amiga game.
Watch Gandahar, it is much more enjoyable. Even if you don't like subtitles, give it a chance.