It wasn't widely publicized but Star Wars creator George Lucas was directly involved in all aspects of the show. Like the movies, some parts were light and fun but some were thematically very dark and intense, most notably the storyline of Darth Maul's return. Yep, Darth Maul survived Episode I, and The Clone Wars being such a well-written show came up with a plausible way to make that happen. However, it should be said that some episodes of The Clone Wars may be too frightening for the youngest younglings in your family.
The Clone Wars was unfortunately cancelled before many of the the 6th season episodes were finished or aired. There was concern when it aired that the Season 5 finale was actually going to be the series' finale, and that later turned out to be true.
Thanks to continued fan support, letter-writing and outcry (#SaveTheCloneWars), most of what would have been Season 6 has now been completed and will be also available on Netflix March 7 as "The Lost Missions". There is no proper finale to the show and even after we see these Lost Missions there will likely still be some unanswered questions. Here's the official info from StarWars.com
However, for fans of the show any more Clone Wars is a good thing. For new viewers you'll have 5 seasons of awesome to catch up on starting March 7! Enjoy!