Lot of episodes of adventure, comedy, action. One of the best rated anime series. It has all the ingredients for success: good, yet simple animation, nice soundtrack, good story, interesting characters.
There are a lot of characters featuring in this series all of them presenting interesting aspects. A "favourite character game" was held on IMDB, all characters starting with 5 points and viewers were allowed to remove a single point from one character and give it to their favourite. A lot of blood was spilled between fans, with some great competition that involved even secondary characters.
The music is great, and one good aspect is they do change the intro and the ending throughout the series, pretty normal considering the lenght (52 episodes).
The story is interesting and presented in modern fashion, with well mounted flashbacks. Not difficult to follow. It will take though a few episodes (4-5) until you are really connected with the global story.
The only thing that was a bit dissapointing for this series was the ending. Somewhat weird and unexpected, but there is a continuation for the series, a movie released in 2005 "The chamber of Shambala", hope that offers a better conclusion for the series. I'll come back with more after I get to see that one as well.