The series has a good deal of action, with sorcery, sword fighting, dragons, you name it. Although the action scenes are nothing compared to what we see in today's anime selection, it held its own seeing as it is an older series. The music in the series was appropriate for the scenes, but it definitely wasn't what I've come to expect in that department. Each character develops nicely, and you learn a good deal about them throughout the series, with enough to keep you wanting more.
I felt that the series had a pretty solid story, but this was not an anime you watch for the storyline. The real enjoyment factor would be the relationship between the main characters like Lina, Gourry, and Zelgadis. If you enjoy an anime chock full of funny, with some pretty solid action, character development, and storyline, then I think Slayers would be a good fit for you! Don't forget that there are a few continuations to the series as well if you enjoy the first.
Just as a side-note as it wasn't mentioned - the voice actor for Zelgadis was Dan Cronin up until EP. 18, which transferred to Crispin as Cronin went MIA, apparently.
