Along with that there's the try-to-get-5-trainer-card-stars bit, the Battle Frontier (LOTS of battling there), getting all of the phone numbers (including gym leaders), chasing down all of those legendary Pokemon and other such side-quests. As well as starting over and trying it with a different team/impose a challenge on yourself, of course.
Any other questions, please ask them in the Help thread sticky at the top of the section (or check out the FAQ thread as well for more info). That's basically it so going to close.