Nickelodeon (ended 2008)
another cactus juice one:
It would be funny if during the last battle Sokka filled the fire nations water with cactus juice. (just imagine)
it would be funny if... katara was really an earthbender and for all the times she waterbends, she uses a stunt double
it would be funny if they made a real life movie of avatar with that bald spoon kid from The Matrix playing Aang