The cartoon is all about the war between the republic and the separatists. It shows personality and depth the clones. There are a bunch of insignificant encounters of worlds you haven't heard from and there are others like the Dathomir witches. That species where Darth Maul is from. It all seems canon and is worth it to me to get into the little intricacies. Plus, Anakin is not the forced emotional moniker ep II and III are.
Then, there is the new one; Star Wars Rebels. That, I have no clue of.